Earlier today NOD32 had a virus definition file that included a false  
positive for the fah*.exe (Stanford protein folding client).   
Unfortunately, instead of quarantining the fah files, it made the  
computer non-functional.  I have four dead computers here in LIR from  
this.

I've finally figured out that the cause was NOD32, and this ESET  
knowledgebase article claims to have the fix:

	http://training.eset.com/kb/index.php? 
option=com_kb&Itemid=29&page=articles&articleid=812

There is more information at the Wilder Security NOD32 forum:

	http://www.wilderssecurity.com/showthread.php?t=210125

-John