TSGL: Firefox addons

[Trio800_BonBon]

Has anybody else been having problems with Firefox 
addons after an update?

I know that it disables some of the addons after the 
update, but I have a different problem.

If I try to install a new addon, I get the message that 
the "addon will be installed when fire fox is 
restarted". If I restart firefox, the addon is not 
installed and the restart message remains. If I restart 
numerous times nothing changes.

The same thing happens when I try to uninstall. I get 
the "uninstall when restarted" message. But after 
restart(s) the addon is still there with the restart 
message.

Even worse, If i try to set options in some of the 
addons, nothing happens. If I click again, I get the 
dreaded MS "Thunk" sound and firefox is locked up.

Any ideas as to what's causing this?

Thanks

Bob