Windows 7 Right Click All Programs Menu Bug

[MyWindowsAteYourMac]

HI!
I upgraded from Windows Vista Ultimate to Windows 7. Everything seems to be working wonderfully except one small thing for me. When I click on my Start button then go to >All programs, if I attempt to right click and thing within this section, my windows explorer crashes.

I have tried a new reinstall, and still does it. It's not the end of the world, but kind of annoying atm. Any ideas?

Thanks.