why do i get mozilla firefox not responding very often

The message states that the user should 'close the existing Firefox process,' something that people who are not computer-savvy will not understand. My concern is that if this is a widespread problem, people who do not know how to fix it will not continue with Firefox.

I taught him how to fix it via Windows Task Manager, and now he's using Firefox again. I asked him why he had switched, and he told me about this problem. I was surprised, as he's been using Firefox 2.x exclusively since I installed it for him over a year ago. However, I installed RC1 on a friend's computer when it first came out, and he told me several days ago that he no longer uses Firefox and has gone back to Internet Explorer. I did not think much of it, as it was simple enough to fix: I go to Windows Task Manager, click on the Processes tab, then end Firefox.exe. The message sometimes comes up when I have closed Firefox and am reopening the application. I updated my Firefox to 3.0 RC2 and am still having the same problem, which I have never once had with Firefox 2.

To open a new window, you must first close the existing Firefox process, or restart your system.' 'Firefox is already running, but is not responding. Ever since I upgraded to Firefox 3.0 RC1 from Firefox 2.x, I have been having the following message at least several times daily:

Why do i get mozilla firefox not responding very often