I had problems with two machines at home this weekend; an old XP machine and a new WIN7 machine. Same error on both; "can not download due to network or connection problem" etc... Hit update, progress shows searching, then hits downloading and generates the error message. I did pretty much everything to solve the problem on XP and managed to get 1 download that came across dying with same message at end. but got the definitions. Got 1 clean on the WIN7, and then back to crashing on both. I get to work tonight and the guy at work is building an image and all is good but 1 download. What is that I ask; "MSE!" Anybody else noticed this or want to try it?