diff --git a/Vocaluxe/Base/CDataBase.cs b/Vocaluxe/Base/CDataBase.cs
index fc878e72..8f3a6992 100644
--- a/Vocaluxe/Base/CDataBase.cs
+++ b/Vocaluxe/Base/CDataBase.cs
@@ -51,6 +51,7 @@ namespace Vocaluxe.Base
             InitHighscoreDB();
             InitCoverDB();
             InitCreditsRessourcesDB();
+            GC.Collect();
         }
 
         #region Highscores
@@ -1242,6 +1243,7 @@ namespace Vocaluxe.Base
             {
                 _TransactionCover.Commit();
                 _TransactionCover = null;
+                GC.Collect();
             }
         }
 
diff --git a/Vocaluxe/Base/CSongs.cs b/Vocaluxe/Base/CSongs.cs
index 09d23ab5..f0eb5717 100644
--- a/Vocaluxe/Base/CSongs.cs
+++ b/Vocaluxe/Base/CSongs.cs
@@ -1048,6 +1048,12 @@ namespace Vocaluxe.Base
                     STexture texture = song.CoverTextureSmall;
                     song.CoverTextureBig = texture;
                     _CoverLoadIndex++;
+
+                    if (i % 100 == 0)
+                    {
+                        CDataBase.CommitCovers();
+                        GC.Collect();
+                    }
                 }
 
                 _CoverLoaded = true;
diff --git a/Vocaluxe/Lib/Sound/COpenALPlay.cs b/Vocaluxe/Lib/Sound/COpenALPlay.cs
index 18d91b37..e79163ce 100644
--- a/Vocaluxe/Lib/Sound/COpenALPlay.cs
+++ b/Vocaluxe/Lib/Sound/COpenALPlay.cs
@@ -37,6 +37,7 @@ namespace Vocaluxe.Lib.Sound
                 CloseAll();
 
             AC = new AudioContext();
+            
             AC.MakeCurrent();
             
 
@@ -400,8 +401,8 @@ namespace Vocaluxe.Lib.Sound
 
     class OpenAlStream
     {
-        const int buffer_size = 16384;
-        const int buffer_count = 2;
+        const int buffer_size = 2048;
+        const int buffer_count = 5;
         const long BUFSIZE = 50000L;
 
         Object CloseMutex;
@@ -628,7 +629,12 @@ namespace Vocaluxe.Lib.Sound
             try
             {
                 _source = AL.GenSource();
-                _buffers = AL.GenBuffers(buffer_count);
+                _buffers = new int[buffer_count];
+                for (int i = 0; i < buffer_count; i++)
+			    {
+                    _buffers[i] = AL.GenBuffer();
+			    }
+               
                 _state = 0;
                 //AL.SourceQueueBuffers(_source, _buffers.Length, _buffers);
             }
@@ -833,7 +839,7 @@ namespace Vocaluxe.Lib.Sound
             AL.GetSource(_source, ALGetSourcei.BuffersQueued, out queued_count);
 
             int processed_count = buffer_count;
-            if (queued_count != 0)
+            if (queued_count > 0)
             {
                 AL.GetSource(_source, ALGetSourcei.BuffersProcessed, out processed_count);
                 doit = false;
diff --git a/Vocaluxe/Lib/Sound/CPortAudioPlay.cs b/Vocaluxe/Lib/Sound/CPortAudioPlay.cs
index 4fc3bbf0..1d4fd1bf 100644
--- a/Vocaluxe/Lib/Sound/CPortAudioPlay.cs
+++ b/Vocaluxe/Lib/Sound/CPortAudioPlay.cs
@@ -384,7 +384,8 @@ namespace Vocaluxe.Lib.Sound
 
     class PortAudioStream
     {
-        const long BUFSIZE = 50000L;
+        const long BUFSIZE = 1000000L;
+        const long BEGINREFILL = 800000L;
 
         private CSyncTimer _SyncTimer;
         private bool _Initialized;
@@ -649,7 +650,7 @@ namespace Vocaluxe.Lib.Sound
             outputParams.suggestedLatency = _outputDeviceInfo.defaultLowOutputLatency;
 
             uint bufsize = (uint)CConfig.AudioBufferSize;
-            errorCheck("OpenDefaultStream", PortAudio.Pa_OpenStream(
+            errorCheck("OpenDefaultStream (playback)", PortAudio.Pa_OpenStream(
                 out _Ptr,
                 IntPtr.Zero,
                 ref outputParams,
@@ -760,7 +761,7 @@ namespace Vocaluxe.Lib.Sound
             bool DoIt = false;
             lock (_LockData)
             {
-                if (!_skip && BUFSIZE - 10000L > _data.BytesNotRead)
+                if (!_skip && BEGINREFILL > _data.BytesNotRead)
                     DoIt = true;
             }
 
@@ -792,7 +793,7 @@ namespace Vocaluxe.Lib.Sound
             {
                 _data.Write(Buffer);
                 _TimeCode = Timecode;
-                if (_data.BytesNotRead < BUFSIZE - 10000L)
+                if (_data.BytesNotRead < BEGINREFILL)
                 {
                     _waiting = false;
                     EventDecode.Set();
@@ -866,7 +867,7 @@ namespace Vocaluxe.Lib.Sound
                     }
                 }
 
-                if (_data.BytesNotRead < BUFSIZE - 10000L)
+                if (_data.BytesNotRead < BEGINREFILL)
                 {
                     EventDecode.Set();
                     _waiting = false;
@@ -901,7 +902,7 @@ namespace Vocaluxe.Lib.Sound
                 if (errorCode == PortAudio.PaError.paStreamIsNotStopped)
                     return false;
 
-                CLog.LogError(action + " error: " + PortAudio.Pa_GetErrorText(errorCode));
+                CLog.LogError(action + " error (playback): " + PortAudio.Pa_GetErrorText(errorCode));
                 if (errorCode == PortAudio.PaError.paUnanticipatedHostError)
                 {
                     PortAudio.PaHostErrorInfo errorInfo = PortAudio.Pa_GetLastHostErrorInfo();
diff --git a/Vocaluxe/Lib/Sound/CPortAudioRecord.cs b/Vocaluxe/Lib/Sound/CPortAudioRecord.cs
index 884886cb..dd4a631b 100644
--- a/Vocaluxe/Lib/Sound/CPortAudioRecord.cs
+++ b/Vocaluxe/Lib/Sound/CPortAudioRecord.cs
@@ -148,7 +148,7 @@ namespace Vocaluxe.Lib.Sound
                     inputParams.sampleFormat = PortAudio.PaSampleFormat.paInt16;
                     inputParams.suggestedLatency = PortAudio.Pa_GetDeviceInfo(_DeviceConfig[i].ID).defaultLowInputLatency;
 
-                    if (errorCheck("OpenStream", PortAudio.Pa_OpenStream(
+                    if (errorCheck("OpenStream (rec)", PortAudio.Pa_OpenStream(
                         out _recHandle[i],
                         ref inputParams,
                         IntPtr.Zero,
@@ -159,7 +159,7 @@ namespace Vocaluxe.Lib.Sound
                         new IntPtr(i))))
                         return false;
 
-                    if (errorCheck("Start Stream", PortAudio.Pa_StartStream(_recHandle[i])))
+                    if (errorCheck("Start Stream (rec)", PortAudio.Pa_StartStream(_recHandle[i])))
                         return false;
                 }
             }
@@ -321,7 +321,7 @@ namespace Vocaluxe.Lib.Sound
             }
             catch (Exception e)
             {
-                CLog.LogError("Error on Stream Callback: " + e.ToString());
+                CLog.LogError("Error on Stream Callback (rec): " + e.ToString());
             }
 
             return PortAudio.PaStreamCallbackResult.paContinue;
@@ -331,7 +331,7 @@ namespace Vocaluxe.Lib.Sound
         {
             if (errorCode != PortAudio.PaError.paNoError)
             {
-                CLog.LogError(action + " error: " + PortAudio.Pa_GetErrorText(errorCode));
+                CLog.LogError(action + " error (rec): " + PortAudio.Pa_GetErrorText(errorCode));
                 if (errorCode == PortAudio.PaError.paUnanticipatedHostError)
                 {
                     PortAudio.PaHostErrorInfo errorInfo = PortAudio.Pa_GetLastHostErrorInfo();
diff --git a/Vocaluxe/Lib/Webcam/CAForgeNet.cs b/Vocaluxe/Lib/Webcam/CAForgeNet.cs
index cbddcedc..3dc53446 100644
--- a/Vocaluxe/Lib/Webcam/CAForgeNet.cs
+++ b/Vocaluxe/Lib/Webcam/CAForgeNet.cs
@@ -16,36 +16,35 @@ namespace Vocaluxe.Lib.Webcam
 {
     class CAForgeNet : IWebcam
     {
-        private Bitmap _CurrentFrame = new Bitmap(1, 1);
         private List<SWebcamDevice> _Devices = new List<SWebcamDevice>();
         private bool _Paused;
         private VideoCaptureDevice _Webcam;
         private FilterInfoCollection _WebcamDevices;
         private SWebcamConfig _Config;
+        byte[] data = new byte[1];
+        int _Width, _Height;
 
         public void Close()
         {
             if (_Webcam != null)
             {
                 _Webcam.SignalToStop();
+                _Webcam.WaitForStop();
                 _Webcam.NewFrame -= new NewFrameEventHandler(OnFrame);
+                data = new byte[1];
             }
         }
 
         public bool GetFrame(ref STexture Frame)
         {
-            if ((_CurrentFrame != null) && (_Webcam != null))
+            if (_Webcam != null && _Width > 0 && _Height > 0 && data.Length == _Width * _Height * 4)
             {
-                lock (_CurrentFrame)
+                lock (data)
                 {
-                    BitmapData bitmapdata = _CurrentFrame.LockBits(new Rectangle(0, 0, _CurrentFrame.Width, _CurrentFrame.Height), ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
-                    byte[] data = new byte[4 * _CurrentFrame.Width * _CurrentFrame.Height];
-                    Marshal.Copy(bitmapdata.Scan0, data, 0, data.Length);
-                    _CurrentFrame.UnlockBits(bitmapdata);
-                    if (((Frame.index == -1) || (_CurrentFrame.Width != Frame.width)) || (_CurrentFrame.Height != Frame.height))
+                    if (Frame.index == -1 || _Width != Frame.width || _Height != Frame.height)
                     {
                         CDraw.RemoveTexture(ref Frame);
-                        Frame = CDraw.AddTexture(_CurrentFrame.Width, _CurrentFrame.Height, ref data);
+                        Frame = CDraw.AddTexture(_Width, _Height, ref data);
                     }
                     else
                     {
@@ -58,11 +57,15 @@ namespace Vocaluxe.Lib.Webcam
 
         public Bitmap GetBitmap()
         {
-            if ((_CurrentFrame != null) && (_Webcam != null))
+            if (_Webcam != null && _Width > 0 && _Height > 0 && data.Length == _Height * _Width * 4)
             {
-                lock (_CurrentFrame)
+                lock (data)
                 {
-                    return (Bitmap)_CurrentFrame.Clone();
+                    Bitmap bmp = new Bitmap(_Width, _Height);
+                    BitmapData bitmapdata = bmp.LockBits(new Rectangle(0, 0, _Width, _Height), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
+                    Marshal.Copy(data, 0, bitmapdata.Scan0, data.Length);
+                    bmp.UnlockBits(bitmapdata);
+                    return bmp;
                 }
             }
             else
@@ -103,9 +106,16 @@ namespace Vocaluxe.Lib.Webcam
         {
             if (!_Paused)
             {
-                lock (_CurrentFrame)
+                lock (data)
                 {
-                    _CurrentFrame = (Bitmap) e.Frame.Clone();
+                    if (_Width != e.Frame.Width || _Height != e.Frame.Height || data.Length != e.Frame.Width * e.Frame.Height * 4)
+                        data = new byte[4 * e.Frame.Width * e.Frame.Height];
+
+                    _Width = e.Frame.Width;
+                    _Height = e.Frame.Height;
+                    BitmapData bitmapdata = e.Frame.LockBits(new Rectangle(0, 0, _Width, _Height), ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
+                    Marshal.Copy(bitmapdata.Scan0, data, 0, data.Length);
+                    e.Frame.UnlockBits(bitmapdata);
                 }
             }
         }
diff --git a/Vocaluxe/Screens/CScreenOptionsVideo.cs b/Vocaluxe/Screens/CScreenOptionsVideo.cs
index d3daba86..e45d25e5 100644
--- a/Vocaluxe/Screens/CScreenOptionsVideo.cs
+++ b/Vocaluxe/Screens/CScreenOptionsVideo.cs
@@ -165,33 +165,42 @@ namespace Vocaluxe.Screens
 
             SWebcamDevice[] devices = CWebcam.GetDevices();
 
-            if (devices != null)
+            try
             {
-                if (devices.Length > 0)
+                if (devices != null)
                 {
-                    _DeviceNr = 0;
-                    _CapabilityNr = 0;
-                    GetFirstConfiguredWebcamDevice(ref _DeviceNr, ref _CapabilityNr);
-
-                    foreach (SWebcamDevice d in devices)
+                    if (devices.Length > 0)
                     {
-                        SelectSlides[htSelectSlides(SelectSlideWebcamDevices)].AddValue(d.Name);
-                    }
-                    SelectSlides[htSelectSlides(SelectSlideWebcamDevices)].Selection = _DeviceNr;
+                        _DeviceNr = 0;
+                        _CapabilityNr = 0;
+                        GetFirstConfiguredWebcamDevice(ref _DeviceNr, ref _CapabilityNr);
 
-                    foreach (SCapabilities c in devices[_DeviceNr].Capabilities)
-                    {
-                        SelectSlides[htSelectSlides(SelectSlideWebcamCapabilities)].AddValue(c.Width.ToString() + " x " + c.Height.ToString() + " @ " + c.Framerate.ToString() + " FPS ");
+                        foreach (SWebcamDevice d in devices)
+                        {
+                            SelectSlides[htSelectSlides(SelectSlideWebcamDevices)].AddValue(d.Name);
+                        }
+                        SelectSlides[htSelectSlides(SelectSlideWebcamDevices)].Selection = _DeviceNr;
+
+                        foreach (SCapabilities c in devices[_DeviceNr].Capabilities)
+                        {
+                            SelectSlides[htSelectSlides(SelectSlideWebcamCapabilities)].AddValue(c.Width.ToString() + " x " + c.Height.ToString() + " @ " + c.Framerate.ToString() + " FPS ");
+                        }
+                        _Config.MonikerString = devices[SelectSlides[htSelectSlides(SelectSlideWebcamDevices)].Selection].MonikerString;
+                        _Config.Width = devices[SelectSlides[htSelectSlides(SelectSlideWebcamDevices)].Selection].Capabilities[SelectSlides[htSelectSlides(SelectSlideWebcamCapabilities)].Selection].Width;
+                        _Config.Height = devices[SelectSlides[htSelectSlides(SelectSlideWebcamDevices)].Selection].Capabilities[SelectSlides[htSelectSlides(SelectSlideWebcamCapabilities)].Selection].Height;
+                        _Config.Framerate = devices[SelectSlides[htSelectSlides(SelectSlideWebcamDevices)].Selection].Capabilities[SelectSlides[htSelectSlides(SelectSlideWebcamCapabilities)].Selection].Framerate;
+                        CWebcam.Close();
+                        CWebcam.Select(CConfig.WebcamConfig);
+                        CWebcam.Start();
                     }
-                    _Config.MonikerString = devices[SelectSlides[htSelectSlides(SelectSlideWebcamDevices)].Selection].MonikerString;
-                    _Config.Width = devices[SelectSlides[htSelectSlides(SelectSlideWebcamDevices)].Selection].Capabilities[SelectSlides[htSelectSlides(SelectSlideWebcamCapabilities)].Selection].Width;
-                    _Config.Height = devices[SelectSlides[htSelectSlides(SelectSlideWebcamDevices)].Selection].Capabilities[SelectSlides[htSelectSlides(SelectSlideWebcamCapabilities)].Selection].Height;
-                    _Config.Framerate = devices[SelectSlides[htSelectSlides(SelectSlideWebcamDevices)].Selection].Capabilities[SelectSlides[htSelectSlides(SelectSlideWebcamCapabilities)].Selection].Framerate;
-                    CWebcam.Close();
-                    CWebcam.Select(CConfig.WebcamConfig);
-                    CWebcam.Start();
                 }
             }
+            catch (Exception e)
+            {
+                CLog.LogError("Error on listing webcam capabilities: " + e.Message);
+                devices = null;
+            }
+            
             SelectSlides[htSelectSlides(SelectSlideWebcamDevices)].Visible = (devices != null && devices.Length > 0);
             SelectSlides[htSelectSlides(SelectSlideWebcamCapabilities)].Visible = (devices != null && devices.Length > 0);
             Statics[htStatics(StaticWebcamOutput)].Visible = (devices != null && devices.Length > 0);