Upstream patch: http://dovecot.org/pipermail/dovecot-cvs/2006-July/006056.html
Fixed in edgy with the current upload of 1.0rc2. -- sub-folders disappear on upgrade from breezy to dapper https://launchpad.net/bugs/51038 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
