An awesome torrents is being shared at u2torrents.com... 23 CDs of the popmart rehearsals in Las Vegas, from an IEM source (i believe it's the Edge's one, because Edge's guitars and voice is higher than the rest).
It's a really interesting bootleg (i've already heard 6 CDs), and we can hear very well Edge playing and changing effects, even talking about them. For example in "If God will send his angels" he tells Dallas to switch from the SDD3000 to the TC 2290.
Here it is: http://u2torrents.com/torrents-details?id=8284&hit=1
It's a real treasure, and the audio quality is great!