I just got my new PowerMac today, and set it up and everything and couldnt resist a quick peak inside the case. It does look a little different in there noticed a big honking heatsink on the board that i dont remember seeing before. Anyway the thing is at the bottom of the case there is a little sticker saying something along the lines of "If you see liquid, contact Apple Support". Is that a generic "If you see strange liquid in your case PANIC!" or.... didnt the 2.7's have this written in them? I don't remember it being in my old 2.3 case. Maybe i just didnt see it. Do the new cooling systems involve heatpipes? The system is a LOT quieter than the old 2.3 was. I have not heard the fans spin up high at all yet.