My Windows 7 laptop is finally fixed!
If anyone is using a 64-bit operating system with Vista or 7, beware that Firefox's private browsing mode in the 3.5 series and the 3.6 beta versions can crash your Windows Explorer once you close Firefox and right-click on anything pertaining to your system. Here's the official bug report about it from Mozilla, and I urge anyone who encounters these problems to either turn off the private browsing mode or upgrade to the new release candidate of Firefox 3.6 where Mozilla has corrected the problem:
https://bugzilla.mozilla.org/show_bug.cgi?id=518412
Hmm, I am using Vista 64 bit on my laptop (apparently 32 bit on my desktop since I got it only 7 months after Vista debuted). I never liked Firefox, so it's all good

Nevertheless, glad you got your laptop fixed... now if only I could get mine fixed