<html><head/><body><html><head></head><body>I would start by toggling the smooth scrolling option if that is still there, if not, then I would next try disabling compositing if it's enabled. This is assuming the problem began after updating to Firefox when 12.04 was working correctly before. <div class="gmail_quote">Dan Healy <dfhealy@gmail.com> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> When scrolling Google News, my system will lock up. The cursor will move, but the screen will not change. I can power off the system and restart and it will work for awhile, then lock up again. Any ideas on how I might trouble shoot the problem? Thanks, Dan H <pre style="white-space: pre-wrap; word-wrap:break-word; font-family: monospace; margin-top: 0px">-- Ubuntu-us-tx mailing list Ubuntu-us-tx@lists.ubuntu.com Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-us-tx">https://lists.ubuntu.com/mailman/listinfo/ubuntu-us-tx</a> </pre></blockquote></div></body></html></body></html>