Hi,
I'm using a iMac Intel 2 Core Duo 2.16GHz running Snow Leopard 10.6.8.
Apple Software Update program is not working at all recently. When the Software Updater alerts me that updates are ready to install, I follow the usual procedure, but none of the updates are performed. Next time I run the Software Installer all of the same updates are still there.
I've tried repairing permissions & using Disk Utility on my Snow Leopard installer to repair the disk, but this hasn't helped.
I searched on the net for solutions & found one on the Macfixit/CNET site that recommended trying the Apple Software Installer Update 1.0:
http://reviews.cnet.com/8301-13727_7-57400956-263/apple-issues-software-installe r-update/
Below is the link for the update:
http://support.apple.com/kb/DL1512
I downloaded the update but unfortunately this also didn't work.
Would really appreciate any suggestions or help.
Cheers, Vic.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic