Shoutbox

     I had a perfectly sound computer hard drive untill I installed Msgr+ (even without the sponser). The problem therefore doesn't lie with MSAS but with your program. I uninstalled Msgr+ without using MSAS and the spyware continually caused pop-ups. I finnaly uninstalled it with MSAS and all was fixed.
     In the case of Smiliecentral (as was posted earlier) the problem doesn't lie within pop-ups but with sending unwanted messages through instant messaging programs.

EDIT: I am not a great fan of MS myself but I think MSAS is the best AS program available.