Got the same bug, I can't open the Preferences Panel.
My System: Thinkpad X61t running Ubuntu 10.10 amd64 Kernel Version: 2.6.35-25-generic
Mozilla/5.0 (X11; U; Linux x86_64; de; rv:1.9.2.13) Gecko/20101206 Ubuntu/10.10 (maverick) Firefox/3.6.13
On the other hand, I got another PC, running same Ubuntu and Firefox but with other addons installed. And I can open the Preference Panel there.
Will keep you updated, when I find out something.
Got the same bug, I can't open the Preferences Panel.
My System: Thinkpad X61t running Ubuntu 10.10 amd64 Kernel Version: 2.6.35-25-generic
Mozilla/5.0 (X11; U; Linux x86_64; de; rv:1.9.2.13) Gecko/20101206 Ubuntu/10.10 (maverick) Firefox/3.6.13
On the other hand, I got another PC, running same Ubuntu and Firefox but with other addons installed. And I can open the Preference Panel there.
Will keep you updated, when I find out something.