Strange IE Delays - HELP PLEASE!

I can make three or four normal browser searches and then
the next one will be very very slow; taking up to 2 or 3
minutes. Eventually it connects. I run updated Adaware
and Spybot often and caches,temp files etc are empty.
What could be causing this? I also downloaded new version
of IE. Still I get this problem. It is probably not
hardware related because Outlook, both mail and news, run
well with no delays. I also have latest McAfee scanning
for viruses. ???? Help please!