Unknown Entries in IE History List

Hi,

This is my first time here. I'm an obsolete MCSE, so do have extensive background, but have been out of the biz too long, so need help.

 

I noticed today that there were extensive entries in my IE history list that shouldn't be there. Weird places like "blueseek", "primosearch", emperorsearch, "parkzing" and about a dozen more. Sites I've never heard of and never been to. I ran a full-system scan (Norton Internet Security, version 10.3.0.12) as well as Spyware Doctor, but neither reported anything more than 3 tracking cookies (which are normal and show up regularly).

 

Both my husband and I have noticed increased hard-drive activity, sluggish Internet browsing and we've been receiving emails from our own email account - all suspicious activity, but again, nothing's being caught by either program.  Today's entries in the IE history list really concern me. Any suggestions?

 

Thanks!

Sharon