Using Mesh computer with Athlon chip, Windows XP (Home). When I added SP2, I had trouble with blocked downloads on Ebay and PC Advisor. I was being told that "You have no authority to see this page" amongst other things and there were lots of "X"s where items hadn't downloaded.. I therefore cancelled SP2 but this made no difference. I have found out by trial and error that the problem seems to be Zone Alarm Pro. When I disable this, everything returns to normal but when I reinstate it, I get the blocked items again. Has anybody any idea whether there is a pop-up suppressor in Zone Alarm Pro (I can't find one) and if so, how do I turn it off so that my screens work again.