With Bitdefender 2012 AV installed my browser is almost non-responsive when I try and post in forums. Most normal websites are ok. Just sites with VBulletin forums - so far. Without Bitdefender the PC is very fast with browsing.
I have a Core2Duo 2GB RAM XP with adsl. I use FireFox and have disabled FF anti-phishing. But it didn't help.
Is it my PC? Can i submit specifications via HijackThis or similar for someone to check?