That's interesting patio.
Do you know how it is SETUP to do that?Broni,
I can now confirm that the IE windows update does definitely NOT include any updates that are ready to be installed on the computer via automatic updates.

On my second machine, in admin mode, the yellow balloon SHOWED in the system tray after all. I clicked on it and selected the custom install. It showed a security update for IE6. I then launched IE and went to the windows update page and allowed IE to find the needed updates. The only update shown is a windows genuine advantage update - NO security update for IE6!
I know. On my Vista, SOMETIMES, it takes a few hours for the computer to be up on "PATCH Tuesday", for it to let me know, there are some updates.
I often CHECK, and install them, before anything pops-up.Frank
Once you check for updates one way, they won't show up, if you try another way.Thanks broni for all your help.
I'll keep searching the internet for setting up the notification in limited user mode. As Patio has said it works on his computer, so there must be a way.
Good luck, and keep us posted