Looks like they figured out the problem. I just shipped my projector to Heartland.
When I called two days ago, and explained my problem: The projector shuts down after a few minutes, and then stay on after three or four "hard" on/offs. I have about 450 hrs on the projector.
They had had a meeting with the engineers that morning that had apparently had determined it was a problem with the Iris (probably RTBrandy's). I was first told I could get a loaner, but then they backed off, and said the turn around was only 1 to 2 days. I pushed it because they had started by promising me the loaner, and that I was first told 14 days, but no luck. My gut feeling (completely unsubstantiated) is that they are expecting a flux of these, and do not want to set any presedence.
FYI, I very early on had problems with my projector, where it would not come on again if I turned it off after a short time. Had to pull the plug, and then I could start it up again. Not sure it was related.
Right now I am suffering from withdrawels...