Gerry, I don't think this is the best place to post this question; the Ubuntu forums would be more appropriate. That said, it's almost certainly a plugin or extension that's going awry. Start Firefox and don't go to any pages that make it crash. Then, go to Tools > Addons and disable every extension and plugin, except for the Flash one. If it doesn't crash, then you definitely have a problem with one of the other add-ons. Enable one at a time, restarting Firefox when it says you need to, and go back to a flash page. Be sure to set your startup page to something without Flash content. (Go to Edit > Preferences > General Tab and select the appropriate options.) Keep enabling one add-on at a time until something makes it freeze. When that happens, then the last one you enabled is the problem. Disable it again and keep enabling stuff one-at-a time, to make sure there's not more than one problematic add-on. You can contact me directly at <a href="mailto:dmutters@gmail.com">dmutters@gmail.com</a> if you still have problems. (It's probably best to keep tech assistance questions off of the development lists.) Good luck! --Dane P.S. When you get it working, it would be good to post your solution to the Mint or Ubuntu forums, with "[SOLVED]" in the title. <div class="gmail_quote">On Wed, Dec 14, 2011 at 7:53 AM, gerry <<a href="mailto:gerry.neary@gmx.co.uk">gerry.neary@gmx.co.uk</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Can anyone let me know what is happening. Each time I start Firefox in Ubuntu 11.10 it will at some point freeze. I can recreate the problem easily by trying to run a flash video from You Tube or any embedded video. My version of Firefox is the latest from the updates. Now chrome is giving me the same problem :-( Looks like Flash is the culprit but no one seems to know the answer By the way Mint 11 32bit is fine Any pointers would be useful -- Regards Gerry -- Ubuntu-devel-discuss mailing list <a href="mailto:Ubuntu-devel-discuss@lists.ubuntu.com">Ubuntu-devel-discuss@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel-discuss" target="_blank">https://lists.ubuntu.com/mailman/listinfo/ubuntu-devel-discuss</a> </blockquote></div>