I've been having this problem for a really long time and I just got enough of it. On some websites, IE7 freezes for some seconds. Examples of such websites are: Multiply - Secure, Family-Friendly Media Sharing, Welcome to Facebook! | Facebook, Last.fm – The Social Music Revolution, and others. This does NOT happen with Firefox 3 (nor did it happen with Firefox 1 and Firefox 2).

Things I've already tried before making this thread:
- Resetting Internet Explorer Settings
- Scanning with: Ad-aware 2008, Spybot: S&D, SUPERAntiSpyware.
- Anti-spyware settings enabled: Inmunization (Spybot: S&D), SpywareBlaster
- Scanned for viruses with AVG 8.0 (scheduled scan every night at 1.30am)
- reinstalling IE7

OS: Windows XP SP2
ram: 2gb
browser: Maxthon 2.1.2 (it's IE-based - Maxthon Browser - Full-Featured Browser). I've already tried all this websites in IE7 directly having exactly the same result.

If you need any log from any program (like HJT or whatever) I'd be pleased to, just ask me for it.