Firefox wouldn't restart on SUSE restart

[white_hound]

Hi, everyone !
If one re-boots an openSUSE computer with open Firefox, the Firefox restarts when the system restarts. Actually, every application that was open, restarts.
However, sometimes, Firefox does not restart.
When I perform ps in bash, I see a few Firefox processes do run, but there is no graphical evidence.
If I run Firefox explicitly - stll, no graphical evidence.
If, however, I kill all Firefox processes, it can now be started normally.
Does someone know a reason for such peculiar behavior ?
Thanks in advance !

[gogalthorp]

What version of FF?

I have seen certain version of FF hang jut kill the process.

[white_hound]

Version 3.0
As I wrote, killing the process helps. But maybe there is a way to just fix it ?

[gogalthorp]

Try a newer version of FF

[scrarfussi]

try delete the ~mozilla directory in your home folder when firefox starts it will create a new one