I cannot refresh SLED11-Extras repo anymore.. I keep getting warning about possibly corrupt repomd.xml:

File repomd.xml from repository SLED11-SP2-Updates
is signed with the following GnuPG key, but the integrity check failed:

ID: E3A5C360307E3D54
Fingerprint: 4E98 E675 19D9 8DC7 362A 5990 E3A5 C360 307E 3D54
Name: SuSE Package Signing Key <build@suse.de>
Created: 05/04/2010
Expires: 05/03/2014

The file has been changed, either by accident or by an attacker,
since the repository creator signed it. Using it is a big risk
for the integrity and security of your system.

what i tried from here https://forums.suse.com/showthread.p...ight=Signature
zypper clean -a
smt ncc-sync

Does anybody experience similiar problems?