Then install just one of those.
I have a dell dimension 5150 running windows xp. I have just changed the firewall from Zone alarm to COMODO firewall pro, I also have Ad Aware and Spybot search and destroy and AVG anti virus installed. I use Firefox browser which recently has the habit of showing a download error when I try to link to another page. The page is only accessed If I re fresh the page. this does not happen every time I open a new tab only on occasions.
Any help please.
Ps. how do I change my log in details as my E-Mail has changed.