Bug#389881: RC-ness of this bug
> > by-uuid contains my two ext3 partitions but not my swap
> partition, it also seems like it may be vulnerable to becoming confused.
> Only if the admin is a moron and keeps around multiple file systems
> cloned with dd.
are you calling it moronic to make a backup of a partition by dding to to a spare one? since this was a perfectly workable system of backup under the conventional way of doing things i'd call that pretty unexpected breakage.
the fact it doesn't seem to work for all partition types would seem to rule it out anyway.