User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Open Mozilla to default page. Click on the mail icon to bring up mail and the line which divides the upper and lower right hand parts of the screen breaks into vertical oscillation as as window Enter your Password appears. The line jumps up and down 2 or 3 lines at a rate of several dozen times per second. This paralyzes the computer, requiring a hard shut down. Cannot click OK to get computer to accept password, and cannot Cancel either. Computer is a standard MSI MS-6368 Rev 5 mobo. Nothing is tricky. No other problems with the computer. Renders use of Mozilla mail impossible. (NOTE: This problem also exists in Mozilla beta 1.5b.) Reproducible: Always Steps to Reproduce: 1. 2. 3. It acts as in message #201379 above, but I am using WinXP Pro on this machine. This problem does NOT occur on other WinXP machines I have tested at this location.

Why shpould this block Mozilal development ? -> major and it doesn't matter if you use WIn XP Pro, both are win32 *** This bug has been marked as a duplicate of 201379 ***