Avast Home edition detected C:\WINDOWS\System32\igfxsrvc.exe as a trojan following the last two virus data base updates. This is an original WinXP system file dated 2005
Only AVAST and one other virus scan program at Jotti and Virus Total detect it as a trojan. I have sent a copy of the file to Avast. MalwareBytes, SuperAntiSpyware, and SpyBot did not find this file to be a Trojan. I am posting this as general info for others who may be getting the same detection.