I've burned SL5.2 on a dvd and then updated SL5.1, as I always do. I 
precise this is the x86_64 release.

to answer your other questions :

rpm -q firefox
-> firefox-3.0.2-3.el5.x86_64

rpm -V firefox
-> dependencies not satisfied for firefox-3.0.2-3.el5.x86_64 : xulrunner 
 >= 1.9.0.2-5
S.5....T    /usr/lib64/firefox-3.0.2/defaults/profile/bookmarks.html

does it mean there is trouble with bookmark file?

Troy Dawson a écrit :
> How did you update?
> If you updated, you should be at firefox 3.0.4.  Even if you *didn't* 
> update you should be at firefox 3.0.4.
> Send the following
>
>   rpm -q firefox
>   rpm -V firefox
>
> Troy
>
> Jérôme Roccaz wrote:
>> Hi everyone,
>>
>> well i've just updated SL 5 and firefox doesn't work anymore, 
>> launching it by the icon in the taskbar or within a terminal.
>> With that last way, I have the message :
>>
>> Could not find compatible GRE between version 1.9.0.2 and 1.9.0.2
>>
>> before updating I had forefox 3.0.2, and it it is still it in the 
>> shell script in /usr/bin
>
>