Re: Antivirus? Trusteer Rapport?
Both. Hideous performance on client browsers (Chrome and IE) often down to Norton / Avast toolbar and / or Trusteer Crapport. I always ditch them, then no worries. As regards ad-heavy sites, I often employ various popular HOSTS builds (to avoid malware rather than ads), but boy does it improve performance better than ad-blocking BHOs (apologies - kind of said something similar elsewhere today but it's relevant to the topic)