Hi. it appears that multiple servers, after a successful update yesterday, report the following issue with 'repomd.xml':

host:~ # zypper lu
Refreshing service 'nu_novell_com'.
Removing repository 'SLE11-Security-Module' [done]
Retrieving repository 'SLES11-SP3-Updates' metadata [-]
Signature verification failed for file 'repomd.xml' from repository 'SLES11-SP3-Updates'.
Warning: This might be caused by a malicious change in the file!
Continuing might be risky. Continue anyway? [yes/no] (no):
Retrieving repository 'SLES11-SP3-Updates' metadata [error]
Repository 'SLES11-SP3-Updates' is invalid.
[|] Valid metadata not found at specified URL(s)
Please check if the URIs defined for this repository are pointing to a valid repository.
Warning: Disabling repository 'SLES11-SP3-Updates' because of the above error.
Loading repository data...
Reading installed packages...
No updates found.
host:~ #
Anyone observing similar effects?

What would be the most appropriate reaction?

Thanks and regards, Thomas