Update error

I’m using SUSE 11.2 M5 and have a error update.
Suddenly, Yast can’t connect to update server.
How can I fix that problem?

I’m sorry. I posted wrong picture. This is screenshot of my error.
Mods help me modify my post. Thanks!

From some other posts too, it looks like some files are missing from the factory repos. Had the error yesterday, it’s gone today.
File content.key was missing from oss and non-oss

You have the snapshot repos. The current factory repos are

Index of /factory/repo/oss
Index of /factory/repo/non-oss
Index of /factory/repo/src-oss
Index of /factory/repo/debug

Milestone 6 is the current beta release, by the way. You might want to update that. You can try this with zypper, but you might be better to do a clean install.