It works here on Windows for what that maybe worth. Perhaps use the Diagnose Firefox issues using Troubleshoot Mode to see which Add-ons doing it, then modify that Add-on.

 Just a thought.

I have this problem too, my command+click suddenly not working tonight I am using firefox 6.01 , Mac OS 10.6.8 I havent done anything special today, including install/remove add-ons

I tried to reinstall FF and not fixed. I found the command-click function resumed after I disabled tab mix plus 0.3.8.6

Please suggest solution. I can't live without TMP. Thanks

They have a forum just for you. Click this link. http://tmp.garyr.net/forum/

very weird since TMP hasn't been updated recently, but disabling it did work. Hopefully, they'll release a new version with a patch soon.

This is a link to a modified (by the Greasemonkey devs) version of Tab Mix Plus. Works around the bug until the TMP guys do so officially.

http://sourceforge.net/projects/greas.../files/

Thanks for this -- I thought it was the latest FF update, but it was just coincidence. Much appreciated!

I just updated to FF 6.0.2 and the problem is not still here.

I use TabMix Plus, and encountered the problem when upgrading to Firefox 6.02.

There is a new version of the Greasemonkey plugin (version 0.9.11) that uses a workaround to fix the problem. The link above did not work for me, but this one did:

https://addons.mozilla.org/en-US/firefox/addon/greasemonkey/versions/?page=1#version-0.9.11

I installed this, and it worked for me - I don't have the problem anymore.