I'm embarrassed to say that I got hit, hard, with the Virtumonde trojan infection. I don't peer-to-peer and am pretty cautious about the programs I download/run, only downloading fairly well-known programs from trusted mainstream download sites. Even with those precautions and antivirus/firewall running, I still got infected. The internet was useless with pop-ups and redirects among other problems that were quickly spreading across my system. A little research reveals Vundo or Virtumondo is one of the worst and most difficult to get rid of trojans around. My infection included: Virtumonde, Virtumonde.generic, Virtumonde.sci, Virtumonde.prx and Smitfraud-C.

McAfee, Ad-Aware, Spybot and VundoFix were all useless, either missing the infected files or identifying them but failing to remove them. After much research and reading of help forums I gave Malwarebytes' free Anti-Malware program a try. After running it once, it cut in half the number of infected files and after running it a second time, it eliminated all signs of the infection.

If you have a virus/trojan infection, it would well be worth your time to check out the fine folks at Malwarebytes. They sure saved my butt! Also, thanks to all the volunteers I encountered at various forums who donate their time and experience analyzing logs and scans and providing people with detailed assistance with fighting computer viruses and trojans. I didn't submit my own problem anywhere, but I wouldn't have been able to clear things up without reading their detailed instructions to others; thanks!