This whole problem started Thursday night. Every time I click on a desktop Icon, (I'm not sure about every single one of them, but every one I've used since it started happening) or when Directory Opus opens at startup, and a few other things, I receive this error message: "Explorer.exe - Application Error - The instruction at "0x66006041" rreferenced memory at "0x66006041". The memory could not be "read". (Quotation marks included in error message.) Then It gives me 2 options: Click OK to terminate; Click Cancel to Debug. If I click Cancel to Debug, a few seconds later I get an error message to the effect of Dr. Watson Postmortem Dedugger has encounted a problem and needs to shut down... and so on. Then of course I'm asked if I want to report the problem, which is neither here nor there. Whatever I click, my taskbar, and desktop icons disappear. Basically, Windows Explorer shuts down, then a minute or so later it restarts. The same thing happens if I click OK to terminate it. Anything I have running at the time stays running, but basically freezes up until Explorer loads back up.
I ran all of my anti-* programs in safe mode, with the exception of Hijack This which keeps shutting down on me before the scan is complete. It is the newest version, (1.99.0) and the creator says it might have a bug, but it could also be the Ms4Hd rootkit parasite, but I don't know which one the problem with that might be. In any event, I'm not sure if that parasite could be causing this problem or not. However I do know that this problem is driving me nuts, and I can't figure out what could be causing it. The system was running fine before this, and it seems to have popped up out of nowhere. Any suggestions would be appreciated.