Comment 5 for bug 560152

Me neither, in fact choosing "Keep existing data" for any partition makes the partition tables corrupt and requires an e2fsck to fix. This has happened to me on two computers, one has 2x 74Gb raptors split into 100Mb RAID1 for /boot, 15Gb RAID0 for / and the rest RAID0 for /home and one has 4x WD640s split into 100Mb RAID1 for /boot, 15Gb RAID0 for / and the rest RAID5 for /home. I have had to recover the /home partitions on both using a Live Desktop version because despite selecting to not format them, the following screen still says the partition tables are due to be changed.