User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.2.1) Gecko/20021130 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.2.1) Gecko/20021130 On any site, whenever I use Find on this page or shortcut Ctrl-F, all Mozilla windows that may be open at that time freeze (stop responding). This includes all multiple browser windows, mail/news. I haven't tried with other compnents open. Other Windows (Windows Explorer, etc) continue to work unaffected. I can press the "X" button (close) in the top-right of the window, to get a message from W2K stating the obvious - This program is not responding! Pressing the "End now" button closes all instances of Mozilla. The same happens when I force close Mozilla with Task Manager. Rebooting doesn't help. Reproducible: Always Steps to Reproduce: 1. Go to any site 2. Press Ctrl-F Actual Results: All of Mozilla freeze up. All Mozilla windows stop responding. Expected Results: Start find dialog window I recently upgraded to Mozilla 1.2.1. I didn't see this behaviour (or lack thereof) on the previous version (1.2a) I used. I also see a similar freeze when I try to compose a message in Mail/News. This logged as a separate bug.

Also see bug# 187161

As a rule of the thumb: Follow the Installation Notes, and only use compatible themes. If the creation of new windows cause freeze/hang, there's a chance your XUL.mfl is corruped. Try quit mozilla (and quickstart if running) - delete XUL.mfl, then restart. (XUL.mfl is a chrome cache and will be rebuilt on new startup if missing)

Thank you. I deleted the XUL.MFL file and the problem disappeared.

reopen...

..because this particular bug is a dup *** This bug has been marked as a duplicate of 174473 ***

v.