Can not update software in Opensuse 12.1

I can not update Opensuse 12.1 I just installed the software two days ago.

the message I get is :

There was a (possibly temporary) problem connecting to software source.

the detailed error is:
timeout exceed when accessing 'http//download

Any help

Is that the exact URL given by the error message?

The correct URL for that file would likely be:

Please open a terminal window, and do

zypper lr -d

and post the output here, between CODE tags.