I hope U2 don't become like the Eagles, in the sense of becoming almost crushed by the weight of history (ie their impressive back catalogue). When Eagles resumed in 1994, they started talking about continuing as a creative band in the sense of coming up with new material, but apart from a few mediocre songs - some possibly imported from solo projects - their 'new' album is finally due for release in October 2007! God knows how long they've been recording for, but rumours abounded of perfectionism, ego clashes, fear of failure etc - U2 take note, and please don't end up like that!
(Completely random, totally off-topic observation: overheard in my office the other day. "That was The Edge on the phone." Just for a second, my brain was going 'What the f**k', until I was informed that it was a restaurant of the same name inquiring whether or not we wanted to confirm our Christmas booking.)