Do you have or know of any other programs that are actively running at the time this occurs, aside from Startup programs such as anti-virus?
When you open the Task manager, does the Applications tab indicate any other programs running that may be interfering/conflicting with the program or browser window that is experiencing the problem?
Charlie
On my dell inspirion 6000 running xp service pack 2, the active window sometimes deactivates, ie: the bar at the top turns a lighter color and clicking the window is required to continue working in it. if I bring up the taskbar after this has occured, it shows the program to still be active, but again, it has to be clicked in the window to continue working on it. This happens most often with Firefox, but I've also oberserved it with VLC media player and with AIM. It can be quite irritating to be working on something and have to keep clicking the window as it deactivates in order to continue. Has anyone else run across this problem, or have any idea what's causing it? Trend micro and Adaware have turned up nothing besides some cookies.

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