I don't use ad blocking software, i just manually block known ad sites in IE's security section.  I can give you a list of the sites on my block list if you want.

I don't have any separate ad bocking software - but I don't get any ads ... so I assume there must be something bundled with AVG 

Thanks Spider and Rexi.   TBH Spider I don't trawl the net very much, I tend to stick to the same sites, but what I do use is peeing me off now.  At the risk of sounding stupid here, how do I manually disable please?

Onetoo - google Super anti spyware. It's free. Download it and run it straight away. When it installs, update the files (just press the update button) then tell it to do a full scan of your computer. It's the best program around for killing the ads. AVG has some anti spyware protection but it's minimal.

I don't get any ads - I use FF with Ad Block Plus

Thanks Prom, I'll try that.           I use Avast for my A/V.