[Dovecot] IMAP messages not being marked read

[void372 at transientvoid.com]

I recently moved from Fedora 13 to Fedora 14 and consequently to dovecot 
2.0.8. Since then, I have observed that messages are not being marked as read 
in all cases. The general behavior is:

1. Use my mail client to read all unseen messages. All mail folders show no 
messages unread.

2. Tell mail client to check for new mail.

3. Mail client now says that some folders have new mail (1 or more messages)

4. Clicking on a folder with new mail (say with 6 unread) shows that there are 
no unread messages.

I have observed this behavior using both kmail and squirrelmail so do not 
believe it is a mail client problem.

I have maildir folders to which mail is delivered using procmail recipes 
directly to the appropriate dovecot folder. In these folders, I notice that 
the "cur" directory has a matching number of messages that do not have an "S" 
flag on the end of the file name. For example:

# ls .fedora-list/
cur/                 dovecot.index.log    new/                 
dovecot.index.cache  dovecot-uidlist      tmp/                 

# ls .fedora-list/cur
1293379204.26554_1.nehalem.home.rainbowdreams.com:2,S
1293379206.26571_1.nehalem.home.rainbowdreams.com:2,
1293379207.26581_1.nehalem.home.rainbowdreams.com:2,
1293380106.26744_1.nehalem.home.rainbowdreams.com:2,
1293380106.26748_1.nehalem.home.rainbowdreams.com:2,S
1293381904.26876_1.nehalem.home.rainbowdreams.com:2,S
1293383704.26978_1.nehalem.home.rainbowdreams.com:2,S
1293384604.27005_1.nehalem.home.rainbowdreams.com:2,S
1293385504.27067_1.nehalem.home.rainbowdreams.com:2,S
1293386404.27105_1.nehalem.home.rainbowdreams.com:2,S
1293387305.27158_1.nehalem.home.rainbowdreams.com:2,
1293387305.27166_1.nehalem.home.rainbowdreams.com:2,
1293388204.27193_1.nehalem.home.rainbowdreams.com:2,
1293389105.27234_1.nehalem.home.rainbowdreams.com:2,S
1293390005.27292_1.nehalem.home.rainbowdreams.com:2,S
1293390006.27298_1.nehalem.home.rainbowdreams.com:2,S
1293392706.27400_1.nehalem.home.rainbowdreams.com:2,S
1293392706.27406_1.nehalem.home.rainbowdreams.com:2,S
1293393611.27515_1.nehalem.home.rainbowdreams.com:2,S
1293396304.27673_1.nehalem.home.rainbowdreams.com:2,S
1293396305.27675_1.nehalem.home.rainbowdreams.com:2,S
1293398104.27743_1.nehalem.home.rainbowdreams.com:2,S
1293399003.27966_1.nehalem.home.rainbowdreams.com:2,S


I have so far been unable to observe a pattern as to which messages get 
affected. I made the assumption that perhaps the issue is a conversion issue in 
my existing maildir folders, but this does not appear to be the case. When I 
moved the existing directory out of the way and started with a fresh empty 
directory the issue has come back after a day or two.

Unfortunately, my install of Fedora 14 overlaid the partition with Fedora 13, 
so I cannot confirm the version of dovecot I was using with no issues. (so very 
glad I use separate disk and partition for the OS!) I can say that all 
configuration was in one dovecot.conf file, not the multiple conf.d files I see 
on Fedora 14.

Any assistance on what to troubleshoot next is greatly appreciated! The info 
about my dovecot is shown below. The maildir's are on local LVM/RAID and not 
remote.

Thanks!!


# dovecot -n
# 2.0.8: /etc/dovecot/dovecot.conf
# OS: Linux 2.6.35.10-72.fc14.x86_64 x86_64 Fedora release 14 (Laughlin) ext3
disable_plaintext_auth = no
mail_debug = yes
mail_location = maildir:/vg02/mail/%u
mbox_write_locks = fcntl
passdb {
  driver = pam
}
plugin {
  mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename 
flag_change append
  mail_log_fields = uid box msgid size flags
}
ssl_cert = </etc/pki/dovecot/certs/dovecot.pem
ssl_key = </etc/pki/dovecot/private/dovecot.pem
userdb {
  driver = passwd
}


# dovecot --version
2.0.8