No, I don't have it installed wrong. The big fan is at the bottom of the PSU, but the whole PSU in located in top space of the case, where all of the warm air naturally rises to, that's what I meant.
sn_85, they way it's working is this: the fan at the back is blowing air out, but I don't know where it's drawing it's air from. The fan at the bottom of the PSU is sucking air in, and apparently blowing out the side vents and the back vent, or grilles, as I call them. My little experiment with the lit match definitely tells me that air is coming out of both side grilles and the back grille. So I have to conclude that the bottom fan (the big, slow turning one) is sucking air into the PSU and blowing out through the grilles and into the case.
I would like to hear from the Antec rep on this, and have him confirm that this is the design of the unit.
PC 1-- P4 2.8GHz, ASUS P4G800-V, 1.5 G 3200 3
50w psu, WD 120 gig HD, ATI 9600SE, XP Home w/SP2
PC2-- XP 2100B (at 2.1 GHz, 175 MHz FSB) Epox 8RDA, 512 MB Corsair Value PC 3200, WD 40 G, Lite-on CDRW