Hi- I've been working on an XP system which was badly infected with Sality virus. First showed up as an inability to download completely (99%, then wait forever) and antivirus sites were unreachable. Tried several stand-alone programs to eliminate Sality, but they didn't completely clean the system. Finally bought SuperAntiSpyware Pro, which left the system sparkling clean! Be REAL careful not to plug in a USB memory, as active Sality will infect that in a flash. I recommend using a small flash memory with only what you need, preferably write-protected with a switch.