When I booted up my computer I attempted to do a Spybot S&D scan, when I opened it avast! popped up and said a trojan (Win32:Delf-MZG[trj]) was found in SpybotSD.exe. Ok, so I tried to open a different scanner, a squared free and same thing, a trojan (Win32:Delf-MZG[trj]). Avast recommended I do a boot scan and I noticed that same trojan was coming up in all my scanners and placing them in the quarantine chest. I stopped the avast! scan to prevent everything being placed in the chest and came here for help.