Timo Sirainen wrote:
So the real reasons for these could include temporarily using different index file paths, restoring indexes/uidlists from backups, temporarily using index files for accessing other mailbox.
OK I understand your 3 points about how it actually could happen, and the ideas above as to possible causes; unfortunately we are in none of those situations. :( It was a mailbox simply created, accessed via Thunderbird and Squirrelmail all of... maybe 3 times. Nothing at all changed between the time it was working and the time it wasn't (no other mailboxes were affected).
I'll keep an eye out - I created another new mailbox yesterday which will get the exact same treatment for an employee starting next Monday. If it doesn't happen again I'll just resign to calling it a random happenstance.
-te
-- Troy Engel | Systems Engineer Fluid, Inc | http://www.fluid.com