about a week ago, i started hearing little clicks aand popping sounds as if i was on the internet clicking on links and stuff. But this was happening when no programs were open, so that freaked me out a little. Also, whenever i have a program open once in a while it will "unhighlight" as if i clicked on my desktop or another window, all by itself. Whenever i play a game, every couple minutes i will be returned to the destop all by itself. Well, i ctrl-alt-delete and found that Explorer.exe was taking up almost all my CPU and was at about 100,000 Kb. Then i looked at my zone labs internet security suite and saw that explorer was using the internet. is this normal and what the hell is going on.