Re:FC4 yum/yumex not working after update some programs (SOLUTION)

[fb]

The  glibc-2.3.6-3 was the guilty, after downgrading to 
2.3.5-10.3. the yum working again.
> Monday (27. march) I upgraded with Yumex the programs 
> what where signed with +. Unfortunately I not remember  
> which programs where these ones.
>
> After reboot Yumex/Yum cannot to find any repo site. Repo 
> files are unchanged in my FC4.