after chatting to Eamonn last week, I have installed and run spybot and adaware and removed all the bits found.  My main worry is that someone is tracking what we do.  I have online banking and daren't use it at the mo which is a royal pain in the ass.
 
 if its something which just happens, at least I know its fairly safe to continue as I was, eg buying things online.
 
 Cheers