Solved a stubborn problem with BSOD's on my new windows 7 rig. DRIVER_IRQL_NOT_LESS_OR_EQUAL (d1). WhoCrashed couldn't pinpoint the issue beyond saying it was something with ntoskrnl.exe.
Then I found about windbg on this site: http://www.techrepublic.com/blog/window-on-windows/how-do-i-use-windbg-debugger-to-troubleshoot-a-blue-screen-of-death/1922
Installed it and per the instructions. Found the culprit was a Juniper Networks VPN Secure Acccess manager driver
Probably caused by : NEOFLTR_710_19525.SYS ( NEOFLTR_710_19525+c63d )
What an awesome tool! Juniper, pls fix this issue! (uninstalled now)