Comment 1 for bug 207428

here's a backtrace that might help, or not:

Backtrace:
0: /usr/bin/X(xf86SigHandler+0x7e) [0x80c780e]
1: [0xb7f85420]
2: /usr/lib/xorg/modules/drivers//nv_drv.so [0xb6fc65f5]
3: /usr/lib/xorg/modules/drivers//nv_drv.so [0xb6fc667d]
4: /usr/bin/X(AbortDDX+0x8d) [0x80a953d]
5: /usr/bin/X(AbortServer+0x28) [0x81bf4d8]
6: /usr/bin/X(FatalError+0x66) [0x81bfa96]
7: /usr/bin/X(xf86SigHandler+0xed) [0x80c787d]
8: [0xb7f85420]
9: /usr/lib/xorg/modules/drivers//nv_drv.so(NVCalcStateExt+0x44f) [0xb6fcb91f]
10: /usr/lib/xorg/modules/drivers//nv_drv.so(NVDACInit+0x4e1) [0xb6fc4e31]
11: /usr/lib/xorg/modules/drivers//nv_drv.so [0xb6fc6711]
12: /usr/lib/xorg/modules/drivers//nv_drv.so [0xb6fc70b4]
13: /usr/bin/X(AddScreen+0x1fc) [0x8073d9c]
14: /usr/bin/X(InitOutput+0x21e) [0x80a9c4e]
15: /usr/bin/X(main+0x296) [0x8074526]
16: /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe0) [0xb7d18450]
17: /usr/bin/X(FontFileCompleteXLFD+0x201) [0x8073a91]

unfortunately the box that has this problem is not mine, so I can't help much debugging it.