If so, which web site?
If not, what are you doing on the computer when this window pops up? Where does it appear on the screen, eg, is it in the center of the screen, or does it pop up near the bottom right corner, near the clock?
Any more clues about the message? Exact wording, and what does the blue title bar of the window say?
Do you have any Adobe software installed on your system?
About every 10 seconds I get a message on my screen asking if I want to install Adobe Flash Player. I don't but can't find a way to get rid of this annoying message. I have Windows XP. Can anyone help me?