I recently had the "GoGoogle" redirection Trojan which I cleared with MalWareBytes AntiMalware program. I also ran a full Norton 360 anti virus scan ... which claimed to do quite a lot (including references to the tdss trojan).
Perhaps that is unrelated, but ...
I have just became aware that other PCs on my LAN can no longer see my machine. I was unaware of this because I can still see the other PCs ... and my internet access (through a common DSL modem/router) has been unnaffected.
I ran the Windows XP "Help & Support" and found a "scan" which checks for networking problems and it found a failure in that it failed a ping test.
From the command line, ipconfig tells me the IP address of my PC. When I ping "myself" there is a time out failure. If I disable my Norton Firewall then this ping works. However, the other PCs on the LAN still cannot see my PC.
I have heard that the re-direction trojan messes about with IPs and DNSs (although this is all a bit vague to me). Is there some way to re-assert my IP/DNS settings ?