Firefox behaving "funny" after upgrade to 13.10

[_acki_]

Hi all,

Since I have upgraded to 13.10 firefox browser crashes X and kdm service to restart. Looking at /var/log/kdm.log I find the following:

(EE) 
(EE) Backtrace:
(EE) 0: /usr/bin/X (xorg_backtrace+0x3d) [0x7f20b988002d]
(EE) 1: /usr/bin/X (0x7f20b96de000+0x1a5d99) [0x7f20b9883d99]
(EE) 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f20b87de000+0xfbb0) [0x7f20b87edbb0]
(EE) 
(EE) Segmentation fault at address 0x0
(EE) 
Fatal server error:
(EE) Caught signal 11 (Segmentation fault). Server aborting
(EE) 
(EE) 
Please consult the The X.Org Foundation support 
         at blahblah (edited)
 for help. 
(EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
(EE) 
(EE) Server terminated with error (1). Closing log file.

Looking at Xorg.0.log, i don't find any mention to this error. But the funniest of it all is that if I go to console mode (Ctrl + Alt + F1) and launch firefox from there with

firefox --display :0.0

then firefox runs just fine and X/Kdm don't complain at all.

I can say I've found a 'workaround' for the problem but I'd rather launch firefox from a desktop shortcut as usual.

Any ideas, suggestions?

Thanks in advance.

[_acki_]

I reinstalled nvidia drivers and problem is gone