Folders missing from list

Tue Aug 2 08:07:09 EDT 2016

Hello.

I have cyrus for 12 years, with 20000 users. Recently, I upgraded to
2.2.5.8-Debian-2.5.8-1  and some user's folders are lost from listing. 

Folders are present in /var/spool/cyrus/...., appears in .sub files; 
Squatter indexes the folder, Reconstruct shows it.... everything looks
normal. But folders are missing from list.

In clients applications (horde as webmail and thunderbird, for example),
they appear as "unsubscribed" and can't subscribe again!

Any suggestions?

Thanks in advance.

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