If i run programe with vglrun +tr this is the output.
[VGL 0x32b54220] glXMakeCurrent (dpy=0x2b2b2a7f34c0(:8.0) drawable=0x030000d3 ctx=0x2aaaac7636b0 config=0x2b2b2a8a6be0(0x135) drawable=0x0240000d renderer=Quadro FX GRID K2/PCIe/SSE2 ) 5.012035 ms
[VGL 0x32b54220] glXMakeCurrent (dpy=0x2b2b2a7f34c0(:8.0) drawable=0x030000ed ctx=0x2aaaaca8f010 config=0x2b2b2a8a6be0(0x135) drawable=0x02400014 renderer=Quadro FX GRID K2/PCIe/SSE2 ) 7.333040 ms
[VGL 0x32b54220] glXMakeCurrent (dpy=0x2b2b2a7f34c0(:8.0) drawable=0x030000d3 ctx=0x2aaaac7636b0 config=0x2b2b2a8a6be0(0x135) drawable=0x0240000d renderer=Quadro FX GRID K2/PCIe/SSE2 ) 0.167131 ms
[VGL 0x32b54220] glXMakeCurrent (dpy=0x2b2b2a7f34c0(:8.0) drawable=0x030000ed ctx=0x2aaaaca8f010 config=0x2b2b2a8a6be0(0x135) drawable=0x02400014 renderer=Quadro FX GRID K2/PCIe/SSE2 ) 0.221014 ms
[VGL 0x32b54220] glXMakeCurrent (dpy=0x2b2b2a7f34c0(:8.0) drawable=0x030000d3 ctx=0x2aaaac7636b0 config=0x2b2b2a8a6be0(0x135) drawable=0x0240000d renderer=Quadro FX GRID K2/PCIe/SSE2 ) 7.917881 ms
[VGL 0x32b54220] glXMakeCurrent (dpy=0x2b2b2a7f34c0(:8.0) drawable=0x030000ed ctx=0x2aaaaca8f010 config=0x2b2b2a8a6be0(0x135) drawable=0x02400014 renderer=Quadro FX GRID K2/PCIe/SSE2 ) 0.199080 ms
[VGL 0x32b54220] glDrawBuffer (mode=0x00000404 vw->dirty=0 vw->rdirty=0 vw->getGLXDrawable()=0x02400014 ) 0.155926 ms
[VGL 0x32b54220] glXMakeCurrent (dpy=0x2b2b2a7f34c0(:8.0) drawable=0x030000d3 ctx=0x2aaaac7636b0 [VGL] ERROR: in TempContext--