I can confirm I have had the same problem.
Motherboard MS 6390
Chipset VIA KM266 and VT8233A/8235
I have installed the beta on one computer with no problems,
but this one, to be dual boot, I have had problems with Gparted, wanting to auto mount the partitions when I select them to delete or format them. It crashes Gparted when I unmount the partitions.
The drive has been partitioned, I am not sure if it has been formatted yet.
All further attempts crash on final install confirmation.
I can confirm I have had the same problem.
Motherboard MS 6390
Chipset VIA KM266 and VT8233A/8235
I have installed the beta on one computer with no problems,
but this one, to be dual boot, I have had problems with Gparted, wanting to auto mount the partitions when I select them to delete or format them. It crashes Gparted when I unmount the partitions.
The drive has been partitioned, I am not sure if it has been formatted yet.
All further attempts crash on final install confirmation.
Also noted in the forum thread here http:// ubuntuforums. org/showthread. php?t=1281194