From what I heard, I think Rick Wright wanted to go on Holiday, because Roger Waters was telling him what to play and not play, being a control freak in the studio. Something that never really happened before in the past. (or not told in such an abrasive way). I guess there's so many sides of this story, who knows?
But, over the years, most fingers point at Roger Waters.
Sad.
I think today, Roger Waters realizes he was being a dick, but so many years had passed, it was hard for others to forgive and forget, or maybe there were still things going on, that the public just doesn't know. Anyway, that's just my take on things. I was really hoping after Live 8 Concert, back in the summer of 2005, they would all work and play together again. But you could almost see and feel ''the wall'' between Waters and the rest of the members of Pink Floyd.