Iceweasel and Icedove not showing main window

Hi,
After upgrading from testing to unstable my mozilla apps are not showing their main window.
The processes are running, icedove even ask me for my email password but their's nothing else.

I tried to remove old .mozilla and .mozilla-thunderbird from my home directory but it did not help.

I also downloaded firefox from mozilla.com and it works.

Has anyone an idea about what's wrong?

Thanks,
Fabrice

-- 
To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org 
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org