Boring with quota

[cyrux]

I've upgraded from 2.0.9 to 2.0.11 but I still have same problem:
- Creating mailbox no quota is set
- If I change quota to e.g. 1500, How I can disable quota?

I've tried with:
lq user.test1 -1
lq user.test1 none
lq user.test1 None

nothing to do! :(

setting quota to 0 cause problem to cyradm...

Thx
Gianluigi Tiesi