I'm not sure if anyone else has had this problem, and subsequently found a solution, but I am experiencing the same issue. I am trying to install AsteriskNOW 2.0 and it gets to "Formatting the partition". The progress bar goes to about 40%, then just hangs. Nothing else happens. I have tried it a couple of times and once or twice let it sit at least an hour (probably closer to two). I have also tried the already suggested, remove from network, without success.
My next plan of action is to use a live CD (lubuntu for example) and try it's partition tool. However, if anyone has a better suggestion before I do that (it'll be Monday when I try) I would like to hear.
Supermicro motherboard MBD-X8DTL-iF-O
2x Intel Xeon 5606
16GB Registered Kingston RAM
2x Seagate 1.5TB in RAID-1 (Intel controller)
Matrox integrated video
I'm installing AsteriskNOW 2.0. I have used the same CD to install sucessfully on a test computer (low specs).