One of the strange ways that this FP situation played out was the wide variation of how the affected computers did not react the same way to the problem. In some, the AEC.sys file did not come back, even thought it should have ( http://support.microsoft.com/kb/222193 ) And some "cleaned" PCs lost network connectivity while others did not.

In case any are interested, Comodo has initiated changes to the update testing procedure, along with a few new features added to the forthcoming 4.24 that will help to prevent so much havoc from future potential FPs. (And ALL anti-malware programs fall prey to FPs once in a while.) These changes sure make me feel better about things. Check out posts 13 and 14 here http://forums.comodo.com/index.php/topic,9059.0.html