My Xbox 360 is starting to lock up. Last time I had it on it did it twice, shortly into games, then ran fine. Now it's locking up at various intervals, sometimes without even getting into the boot screen.
What concerns me is that I haven't had the red ring of death, which is when the three red lights appear around the power button. Apparently, the warranty extension insists that's the condition necessary in order to get a free repair. From what I've read, out-of-warranty repairs aren't cheap, to the extent it'd be better to simply buy a new one. That's $200 I'd rather not spend.