The pop-ups I'm taking about are in a grey box and at the top it says "messenger service." They seem to appear randomly, rather than at specific websites. One is from NetPopUp but I don't remember the rest. I used Popup stopper but it doesn't work, and Adware 6.0 doesn't detect anything unusual in the registry. Anybody have experience w/ these pop-ups? I'm using win xp and internet explorer 6.0 if that helps. Thanks.