I was browsing Google's image search when some site appreared to drop a file to my computer, C:\Users\username\AppData\Local\Temp/9uwR.exe which attempted an outgoing connection to the net which i blocked with comodo. So far i havent been able to figure out how the file got through or what it actually is. Comodo didn't find any infections. I'm using windows vista/firefox 4/comodo internet security . Any help would be appriciated, thanks.