Norton Internet Security 2011 and Norton 360 5.x. fix for Firefox 6: http://community.norton.com/t5/Norton-360/Update-Available-Firefox-6-0-Compatibility-Patch/td-p/512484 (scroll down to "Update Available: Firefox 6.0 Compatibility Patch") '''If this reply solves your problem, please click "Solved It" next to this reply when <u>signed-in</u> to the forum.''' ------------------------- Not related to your question, but... You need to update some plug-ins: *Plug-in check: https://www-trunk.stage.mozilla.com/en-US/plugincheck/ *Shockwave Flash (Adobe Flash or Flash): [https://support.mozilla.com/en-US/kb/Managing%20the%20Flash%20plugin#w_updating-flash Updating Flash in Firefox]