I've updated the page of 2007 iMac owner reports with mails from 2 readers on using 2GB SODimms (OK) and comments on the system in general (display, keyboard, Firewire, etc.). After yesterday's 2 reports on problems with some 2GB SODIMMs, Tony's mail had some important notes on making sure the dimms were *fully seated and locked in* (listen for a "Click"...) Verify the sodimm contacts are all the way inserted/bottomed in the socket and locking tabs fully engaged on the dimm.