Cyradm doesn't show any mailboxes

[Kővári János]

Hello,

after my shared folder structure and all the messages in it have 
mysteriously disappeared, I noticed a few strange things:
- all user mailboxes remained intact and fully functional
- I still see everything in the GUI tool Gyrus (I don't actually use 
this, just checked the mailboxes with this now.)
- the Webmin module 'cyrus' doesn't list any mailboxes at all, just a 
bare "/". (It was working before, I created a couple things with this. I 
didn't use it since months, I am not sure when and why it gone wrong)
- cyradm with user 'cyrus' & lm command doesn't display any mailboxes at 
all. (was working beofre, and still works on an other imap server)
- cyradm with another imap admin user doesn't show anything either.
- tried deleting all the mailboxes and creating them again with cyradm, 
and they were created succesfully and they work in the users's client 
too, but cyradm "lm" still doesn't show them.
- using webmin, it reconstructs the mailboxes fine...

Does anyone have any idea, because I don't. Something is very wrong 
here... But still works. Odd.

Thanks in advance!
Regards,
Janos

P.S.: I gave up on recovering the lost shared folders until I find out 
what's this with cyradm.