I was avoiding using LVM for the past time without even understanding why. I was thinking that without LVM things are more simple, just plain partitions. Few days ago I understood why – systems which use LVM for the root partition are kinda harder to recover with different rescue cds. Instead of just plainly mounting the /dev/hd?? to somewhere on /mnt/??? one have to do lots of tricky operations.
I think I will continue sticking to non-LVM installations for the time being since now I even now at least one exact reason why – easier recovery if needed :)