[Dovecot] Query about LIST behaviour

I've just switched from UW-IMAP to Dovecot v1.1.beta16, and I'm having a bit of a problem with a difference in the behaviour of the LIST command.

What I'm seeing is:

• PREAUTH [CAPABILITY IMAP4rev1 SASL-IR SORT THREAD=REFERENCES MULTIAPPEND UNSELECT LITERAL+ IDLE CHILDREN NAMESPACE LOGIN-REFERRALS UIDPLUS LIST-EXTENDED I18NLEVEL=1] Logged in as jp3 a list test/ *
• LIST (\Noselect \HasChildren) "/" "test/a1"
• LIST (\Noselect \HasChildren) "/" "test/a1/b1"
• LIST (\NoInferiors \UnMarked) "/" "test/a1/b1/c1"
• LIST (\NoInferiors \UnMarked) "/" "test/a1/b1/c2"
• LIST (\Noselect \HasChildren) "/" "test/a1/b2"
• LIST (\Noselect \HasChildren) "/" "test/a2"
• LIST (\Noselect \HasChildren) "/" "test/a3" a OK List completed. b list test/a1/ *
• LIST (\Noselect \HasChildren) "/" "test/a1/"
• LIST (\Noselect \HasChildren) "/" "test/a1/b1"
• LIST (\NoInferiors \UnMarked) "/" "test/a1/b1/c1"
• LIST (\NoInferiors \UnMarked) "/" "test/a1/b1/c2"
• LIST (\Noselect \HasChildren) "/" "test/a1/b2" b OK List completed. c list test/a1/b1/ * c OK List completed. d logout
• BYE Logging out d OK Logout completed.

but what I expect (and what I was getting with UW-IMAP) is more like:

... c list test/a1/b1/ *

• LIST (\Noselect \HasChildren) "/" "test/a1/b1"
• LIST (\NoInferiors \UnMarked) "/" "test/a1/b1/c1"
• LIST (\NoInferiors \UnMarked) "/" "test/a1/b1/c2" c OK List completed. ...

Is this is an expected behaviour? If so, is there any configuration I can change to make it behave as I want instead?

-- Julian

Lookie, lookie, here comes cookie... -- Stephen Sondheim