interesting
PROCESS_NAME: taskmgr.exe
LAST_CONTROL_TRANSFER: from bf06ecec to bf04faa0
STACK_TEXT:
.....
b6972840 bf03fd34 e5d7b6e0 00000000 00000000 igxpgd32+0x1167b
b6972854 bf019c2e e5d7b6e0 00000000 00000000 igxpgd32+0x1bd34
b6972870 bf8bd8db e5d7b6e0 00000000 00000000 igxprd32+0x7c2e
b69728ac bf8056b7 e5d7b6e0 00000000 00000000 win32k!xxxPrintWindow+0x7b
b69728c0 bf839c20 e5d7b6e0 00000000 00000000 win32k!HANDLELOCK::vLockHandle+0x4a
b6972adc bf80a4ef e9a59018 e104a008 00000000 win32k!NtGdiAlphaBlend+0xbcc
b6972b70 bf85d4fc e9a59008 bf9a55c0 e79d95b0 win32k!DC::bSetDefaultRegion+0x5e
b6972bd4 bf82abf8 bbed5708 000001c5 03010036 win32k!NtGdiFrameRgn+0x16a
b6972c3c bf829053 bbe606e8 bf9aaf60 bf9aaf60 win32k!GreSetDIBitsToDeviceInternal+0x7f1
b6972c84 bf8276bf bf9aaf60 00000000 bbed5708 win32k!ESTROBJ::vCharPos_H1+0x183
b6972cdc bf82a3da 00000001 00000000 00000000 win32k!vSolidFillRect1+0x132
b6972cfc bf83910d bbed5708 00000000 00000000 win32k!NtGdiExtTextOutW+0x22c
b6972d30 bf839486 00000000 00000057 b6972d64 win32k!xxxCalcMenuBar+0x51
b6972d54 804dd99e 002b03a6 00000005 0007ff5c win32k!NtUserSetFocus+0x26
b6972d5c 00000000 0007ff5c 7c90eb94 badb0d00 nt!ZwQueryEvent+0x13
A system process (TaskMgr) ->Print request->graphic fill operation
Also investigate your print driver -- was it / has it been updated recently?