I got my unit back today, but didn't get the chance to open it until this evening. In the five weeks absence, I purchased another xbox(had the RROD on it about a week ago, but it's working fine...for now).
I got a unit that was manufactored on October 28, 2005. Great. Since I had already made my mind up to sell this box, I hooked it just to make sure it worked. I popped in Halo3, the game asked for an update(I hadn't hooked the wireless adapter up to the system), I hit yes.
The game restarts after installing the update and I get a fuzzy, distored screen....no colors...all grey. I could almost make out the title screen for Halo. Restarted the box, things booted up like normal, and I played single player for 30 minutes.
I don't think this refurb is going to make it too long. I've made a promise to myself already; when my newer system kicks the bucket, I'm going PS3.