you have already reverted back to IE6 from IE7.
Therefore I think your problem is elsewhere. What do you use to protect yourself from hackers, viruses, spyware and trojans?
Have you tried another browser, like Firefox, Opera etc?
Win XP Pro SP2, Dell E510 (new in August 2006) - installed IE7 - and can't revert to IE6. How do I get it back? I'm using IE 6 now - but it keeps freezing up and freezes my entire computer.