This is true for practically every band message board. It's also way more interesting than people just saying how much they love the band etc.The band does read the fan boards occasionally and I think if they checked in on this one they might be pretty depressed about their fan base. Does anybody remember that interview with Bono from a few years ago where he talked about how harsh U2's audience is? He was talking about how he wishes he could actually get some of the sycophancy he's accused of cultivating around himself and said something like "Have you ever been on the U2 fan sites? Man, those people are harsh. They don't let us get away with a thing!"
I also agree with Rachel. The fact that the band is on holiday and has been for quite some time does suggest the album is completely finished or far from finished. Otherwise they'd be working hard to release it this fall, wouldn't they?