Comment 8 for bug 282756

I am experiencing the same problem, using Alpha 3 CD and installed the latest ubiquity as you said. I attach my syslog.

ubuntu@ubuntu:~$ sudo fdisk -l /dev/sda

Disk /dev/sda: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000af8fe

   Device Boot Start End Blocks Id System
/dev/sda1 1 1 0 27 Unknown
Partition 1 does not end on cylinder boundary.
/dev/sda2 * 1 10949 87947811 7 HPFS/NTFS
/dev/sda3 10950 11690 5952082+ 83 Linux