http://bugs.winehq.org/show_bug.cgi?id=30936
--- Comment #2 from Austin English austinenglish@gmail.com 2012-06-18 20:14:04 CDT --- Backtrace: =>0 0x7e20feb5 XIFreeDeviceInfo+0x15() in libxi.so.6 (0x032de310) 1 0x7e25fc29 in winex11 (+0x2fc28) (0x032de310) 2 0x7e2621e0 in winex11 (+0x321df) (0x032de370) 3 0x7e27c66a X11DRV_WindowMessage+0xc9() in winex11 (0x032de410) 4 0x7e9fdb11 in user32 (+0x5db10) (0x032de450) 5 0x7e9fdc1c in user32 (+0x5dc1b) (0x032de4b0) 6 0x7ea00cec in user32 (+0x60ceb) (0x032de8d0) 7 0x7ea0447e PeekMessageW+0x7d() in user32 (0x032de930) 8 0x7ea045f9 PeekMessageA+0xc8() in user32 (0x032de970) 9 0x00404c14 in swkotor (+0x4c13) (0x7b86dd00) 10 0x90e853ec (0x8b55ff8b) 0x7e20feb5 XIFreeDeviceInfo+0x15 in libxi.so.6: movl 0x4(%edi),%edx
Are you on Debian? I recall someone recently having a bug that was fixed by updating libxi.