All repositories have disappeared and will not come back

My SLES11 installed, registered, and updated fine for about 1 week.
Then all the repositories disappeared except for the DVD. I tried the
YAST – Software – Online Update Configuration – Advanced – Register for
support and get update repositories. The result is a message “Software
Repositories did not need to be changed” even though is says I have none.

I tried the command line “suse_register” route and after 20 seconds I
get the prompt back. No changes. But I did get an Email from
support@novell.com telling me the registration was successful.

When I look at my repositories all I have is the DVD; nothing else.

I'm not sure what is wrong and what to do next.

Bob