Great board, just setup a system the other day, put in a 3.2E, 2GB Corsair TwinX PC3200, ATI XT800P, a pair of SATA 120GB'ers in RAID 0 that I use as my video scratch drive and for the OS and applications, and a pair of 250GB'ers off the ATA controller in RAID 1, which contain my photos, final video files and such. I figure I need the performance for my workfiles and such which is why I used RAID0 off the SATA side, but want the backup and redundancy of the RAID 1 for my file projects and photos.
This motherboard is really nice. No problems at all, other than they need to better document how to setup the SATA RAID during the initial windows xp installation. Short version - you need the ICH5 RAID driver files on a floppy, and hit F6 when prompted for 'load a third-party SCSI or RAID controller'. Fortunately, I had such a floppy, as I kept that from a DFI Lan Party 875B box by mistake (returned it for the Asus, big problems with the DFI board). Asus needs to include the appropriate driver floppies, as you can't specify a CD drive during windows Setup. Otherwise, it's a bear.
On a brighter note, a call to Asus at 9:45PM ET prompted a return call the following morning by noon. By then I had it figured out but that's decent response.
I put this board in a Antec LanBoy case, with Antec Truepower 430W supply. P4-3.2 CPU (Prescott), total of 4 hard drives, a DVD/R and CDRW drive, as well as a bad-boy ATI XT800P in the AGP slot. System runs very well, very stable, and is relatively cool with all stock fans.