Description of problem:
crash report appears immediatelly after system start, two times after two consecutive restarts

Version-Release number of selected component:
xorg-x11-server-Xorg-1.12.3-2.fc17

Additional info:
libreport version: 2.0.18
abrt_version:   2.0.18
kernel:         3.6.7-4.fc17.i686.PAE

backtrace:
:0: /usr/bin/Xorg (xorg_backtrace+0x4a) [0x80ac45a]
:1: /usr/bin/Xorg (mieqEnqueue+0x22b) [0x81aacfb]
:2: /usr/bin/Xorg (0x8047000+0x4589c) [0x808c89c]
:3: /usr/bin/Xorg (xf86PostMotionEventM+0x253) [0x80d9ec3]
:4: /usr/lib/xorg/modules/input/evdev_drv.so (0xb3fe3000+0x3e2e) [0xb3fe6e2e]
:5: /usr/lib/xorg/modules/input/evdev_drv.so (0xb3fe3000+0x5534) [0xb3fe8534]
:6: /usr/bin/Xorg (0x8047000+0x82302) [0x80c9302]
:7: /usr/bin/Xorg (0x8047000+0xa8693) [0x80ef693]
:8: (vdso) (__kernel_sigreturn+0x0) [0xb77b4400]
:9: /usr/lib/xorg/modules/libfb.so (fbBlt+0xd73) [0xb7493703]
:10: /usr/lib/xorg/modules/libfb.so (fbCopyWindowProc+0x1a1) [0xb74a0b71]
:11: /usr/bin/Xorg (miCopyRegion+0x184) [0x81a8bb4]
:12: /usr/lib/xorg/modules/libfb.so (fbCopyWindow+0x116) [0xb74a0e26]
:13: /usr/lib/xorg/modules/libexa.so (0xb74a7000+0x11725) [0xb74b8725]
:14: /usr/lib/xorg/modules/libexa.so (0xb74a7000+0x9a8a) [0xb74b0a8a]
:15: /usr/bin/Xorg (0x8047000+0x10dbe7) [0x8154be7]
:16: /usr/bin/Xorg (0x8047000+0x1746df) [0x81bb6df]
:17: /usr/bin/Xorg (0x8047000+0xd1e71) [0x8118e71]
:18: /usr/bin/Xorg (miSlideAndSizeWindow+0x937) [0x81c4f67]
:19: /usr/bin/Xorg (0x8047000+0xd2c2f) [0x8119c2f]
:20: /usr/bin/Xorg (ConfigureWindow+0xaef) [0x80a4a3f]
:21: /usr/bin/Xorg (0x8047000+0x2a400) [0x8071400]
:22: /usr/bin/Xorg (0x8047000+0x303fd) [0x80773fd]
:23: /usr/bin/Xorg (0x8047000+0x1dce5) [0x8064ce5]
:24: /lib/libc.so.6 (__libc_start_main+0xf5) [0x4ed21635]
:25: /usr/bin/Xorg (0x8047000+0x1e029) [0x8065029]