My console started freezing then lo and behold, 3 ROD.
Disconnected everything, reconnected, still 3 ROD.

Put Crackdown DVD back into tray again... downloaded some update for Halo 3 (I'd downloaded the 1G earlier, this one was an add on?), played one round of Halo and then no problems with Crackdown for 3 hours.

Shut down, disconnect from Live, turned back on and lo and behold 3 ROD again... aaarghhh...

Unplugged, restart, managed to get to the menu but froze up again after a while... restart, deleted Halo 3 beta and some other cache stuff (almost 1 gig of half completed downloads) and performed system maintenance on hard drive... reconnected to Live, no problems with C&C 3 for about 20 minutes. Shut down and restarted with no problems...

Unmodded machine, is the Halo 3 beta giving me problems or am i headed down the 3 ROD path?

My x360 is the 2nd batch, 9 months old and died already, damn Microsoft for wasting my money.