So today I was going to move some document stuff over from my computer to my laptop and I put my USB pen drive into my computer. NOD32 v2.7 (and up to date) finds 16 infected files, and cleans 1. I check to see what was going on under "Threat Center" and this is what I found (also, there is nothing in the Quarantine section": Time Module Object Name Threat Action User Information 9/16/2008 15:16:19 PM AMON file F:\Autorun.inf Win32/AutoRun.PI worm error while cleaning - operation unavailable for this type of object NT AUTHORITY\SYSTEM Event occurred at an attempt to access the file by the application: C:\WINDOWS\System32\svchost.exe. The "error while cleaning" part is getting me paranoid. I restarted my computer and everything seems to be fine with startup and all. I did another full NOD32 scan and it says I was clean. I also looked up when NOD32 updated for this specific detection and it was quite a while ago. Same goes for the scan McAfee on my laptop (it said I was clean). The laptop is the one I don't care about so I put my USB drive in it again and scanned it and McAfee found one infection but I couldn't find the file. So I went ahead and formatted the USB pen drive and scanned it again - no detections. Am I safe or do I have to further steps to see if I'm safe or not? And on a side note, can someone exactly tell me how worms are spread so I don't give it to my other comps? Also, can worms transfer via network connections via "My Network Places" even if I don't access it? Thanks!