Keep getting this message on twitter: Twitter.com is loading slowly. Hmm, this seems to be taking a while. If problems persist, please reload to try again. Hasn't loaded properly for weeks. Help?

Perform the suggestions mentioned in the following article:

• Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

-> Update All your Firefox Plugins

• https://www.mozilla.org/en-US/plugincheck/
• When Downloading Plugins Update setup files, Remove Checkmark from Downloading other Optional Softwares with your Plugins (e.g. Toolbars, McAfee, Google Chrome, etc.)
• Restart Firefox

Check and tell if its working.

I've updated all relevant plug-ins and also restarted with add-ons disabled and problem remains. Firefox 12.0 stalled for a period then hanged at this time then a screen appeared showing a screen with system dump, I think it was. Rebooted everything and problem with Twitter showed itself. Everything else appears to work fine. Twitter problem does not occur in IE8.

I'm tempted to re-install Firefox but don't want to lose my tabs in TooMany Tabs and also my old saved sessions. Will these things happen if I do re-install and is it likely to be a successful remedy?