I'm having the exact same problem with the TrendMicro's HouseCall scanner. Everytime I open mIRC I get the BKDR_IRCFLOOD.X virus as the same problem you have. I did get rid of the ieexec.exe program, checked my registries to see if it's infected, but I found nothing. I too believe that the scanner is Fasle. If you happen to find a scanner that also picks BKDR.IRCFLOOD.X, please reply or e-mail me @ email@example.com with a apporiate title regarding the virus BKDR_IRCFLOOD.X which appears on the TrendMicro's HouseCall scanner.