i was trying the "yum update" as i was trying to install the kernel-source
below are the outputs :

# yum update
Setting up Update Process
Setting up repositories
updates-released 100% |=========================| 951 B 00:00
extras 100% |=========================| 1.1 kB 00:00
base 100% |=========================| 1.1 kB 00:00
Reading repository metadata in from local files
primary.xml.gz 100% |=========================| 48 kB 00:16
http://ftp.crihan.fr/mirrors/fedora....rimary.xml.gz: [Errno 4] Socket Error: timed out
Trying other mirror.
primary.xml.gz 100% |=========================| 115 kB 00:21
updates-re: ################################################## 318/318
Added 0 new packages, deleted 18 old in 1.34 seconds
primary.xml.gz 100% |=========================| 112 kB 00:28
http://download.fedora.redhat.com/pu...rimary.xml.gz: [Errno 4] Socket Error: timed out
Trying other mirror.
Error: failure: repodata/primary.xml.gz from extras: [Errno 256] No more mirrors to try.

i've tried the "yum update" so many times and i got the same result, what's wrong??

The problem is that the Fedora Extras repository is very busy, or down for maintenance. You can tell this from the message:

Error: failure: repodata/primary.xml.gz from extras: [Errno 256] No more mirrors to try.


You can try using a mirror, instead of going against the primary repository.

http://www.fedorafaq.org/#installsoftware

go there, use their yum.conf (i do) looks like you're not connectiing to the redhat mirrors for YUM, maybe they have changed/down/overloaded

You can uncomment (remove the #'s) some other very useful repos from it like freshrpms

thank you everybody...

i can get it up and running now...

thank you very much...