Just tried to install core 2. I also saw the "unable to align partition correctly" -message, I pressed Ignore, thinking that this is the famous bug that will keep me from booting to XP.
But alas, in Disk Druid, it shows that my hda6, the partition I spent something like five hours turning to my dedicated /home partition, is marked as free space! I tried clicking around, checking that other partitions look okay, but the installer crashed. I also heard one of my HDs spinning down. (hdd)
Everything works nice in MDK10, though. Even the /home partition.
Specs, in case it matters to someone:
ath xp 1800+
hda : Samsung Spinpoint 120Gb, as hda1(ntfs, win xp), hda2(ext3, /boot), hda3 (/swap), hda5(ext3, /), hda6(ext3, /home)
hdb: Samsung Spinpoint 120Gb, as hdb1(fat32) hdb5(fat32) hdb6(ext3)
hdd: Western Digital 200Gb, as hdd1 and hdd5 (ext3)