Earlier, I was getting some walls for my step-daughter (only using "save as"), and i got a Nortons Anti-virus alert so say I had a "macip" trojan on my computer and that it could not be repaired. At this point my computer began to behave strangely and I couldn't close IE. I immediately ran internet security and anti-virus to locate and nullify this offender. However, when doing a full system scan and checking the alert tracker, Nortons found no evidence of the trojan on my system. I then went to live update to confirm I had the most recent definitions, which I had, so did an online security check to discover the source of the problem. Again, no evidence of a trojan, so did a selective scan of "my pictures" where the walls were stored, and again no trojan, yet the alert window repeatedly reappeared when it was closed.
This is an anomoly I've not encountered before, and Symantec provided no answers either, so if anyone can shed any light on this it would be most useful for future reference and muchly appreciated. Whilst no trojan or virus was detected on my system by subsequent scans, my browser appeared to be hijacked and other applications malfunctioned during this (now seemingly false) alert. A 4th system scan just gave another all clear. Strange! Answers anyone?