Comment 5 for bug 35015

I would mention that for the MySQL trees, some of this is caused by the criss-cross merges and having to fall back to an old ancestor.

I have a patch available which improves the path base selection in those cases:
http://bundlebuggy.aaronbentley.com/project/bzr/request/%3C48936560.6040106%40arbash-meinel.com%3E

It won't make it into 1.6, but it should land in 1.7, if I can just get someone to review it :)