[Dovecot] Help with new syslog errmsgs

[Stewart Dean]

I am bringing more people onto Dovecot...and am beginning to see syslog 
error messages I've never seen before...what are they/are they critical?
1 ===========================
> Jun 12 09:53:21 mercury mail:err|error dovecot: IMAP(gregory): Corrupted index c
> ache file /var/dcndx/gregory/.imap/INBOX/dovecot.index.cache: indexid changed
This has the same date stamp as the user's change date on his 
.subscriptions...which he created by copying his UWIMAP .mailboxlist 
from a login prompt.  Is this what happens when the user with active 
sessions overwrites/creates the .subscriptions file?

2 ===========================
> Jun 12 11:32:36 mercury mail:err|error dovecot: IMAP(gregory): UIDVALIDITY chang
> ed (1100532544 -> 1178155834) in mbox file /home/hcrc/gregory/mail/Sent
Have no idea what this is about......

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Stewart Dean, Unix System Admin, Henderson Computer Resources 
Center of Bard College, Annandale-on-Hudson, New York  12504  
sdean at bard.edu  voice: 845-758-7475, fax: 845-758-7035