I too have been experiencing problems with Threatfire 3.5 and have temporarily uninstalled it. I'm running Windows XP Pro SP2 with AVG8. Threatfire worked well on day one, but upon reboot the next day, the system hung and even after 30 minutes had failed to start. MS Excel 2003 wouldn't open along with other programs. Task manager failed to stop the Threatfire program and the system was unusable. I was able to boot in safe mode and uninstall Threatfire. Having read the post above, about creating exceptions in AVG8 I'll try that as I believe the program has a lot of merits. I bought a similar program called "Blink" a while back from Eeye. It works in a similar manner but cost $25/yr.

Thanks for a very useful forum.