App Store not updating software -- timing out
I'm working on a just-purchased iMac with 10.8 installed, and noticing a problem updating software through the App Store.
I know that there is an iTunes update available to download, for instance, but when I try to do so the system is directing me to update through the app store, and the app store is timing out while it searches for the update. This has happened since I've had the new computer, so for about a week or so.
Anyone know if this is an internal Apple App Store issue, or is there something I can do on my end? Anyone else having this problem?
I bought a used system so I don't have any OS installation disks.
Is there a way to go back to the "Software Update" software used by the older OS?
Thanks
kevin
iMac, Mac OS X (10.7.4)