It seems that Sonnet has finally decided to provide heatsinks with their single processors now. Earlier this afternoon in Microcenter, I saw a 1.2 G4 that I thought was a dual-proc because of size of the box and the picture of the purple heatsink... for $369.00! After looking at Sonnet's site, however, I think it's just a new single G4 with a heatsink on it.
Man, I was going to go right back tomorrow morning after my check was direct deposited and snatch that thing up!