dovecot - May 2011 - IMAP Label Updates not showing up across shared account

Dovecot 2.0.13
Centos 5.4 x86_64 2.6.18-164.9.1.el5 (on ESXi)
OS/Logs on local storage, /home all on NFS server for datastore (NFS Store
Centos 5.5 x86_64 2.6.18-194.11.1.el5)
Thunderbird 3.1.10 on XP/W7 Desktops

We are seeing a werid issue where there is a delay of up to a few mins in seeing
label updates on messages.
I have confirmed that Thunderbird is sending the update to the server with
WireShark, its just additional users
connected to the same mailbox do not see them.
Marking a message as Seen/Un-Seen happens faster just not labels.
If you have a label set when you mark a message as Seen/Un-Seen the other
clients then see the update straight away.


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On Tue, 2011-05-24 at 10:44 +0100, Ricardo Branco wrote:
> Dovecot 2.0.13
> Centos 5.4 x86_64 2.6.18-164.9.1.el5 (on ESXi)
> OS/Logs on local storage, /home all on NFS server for datastore (NFS Store
Centos 5.5 x86_64 2.6.18-194.11.1.el5)
> Thunderbird 3.1.10 on XP/W7 Desktops
> 
> We are seeing a werid issue where there is a delay of up to a few mins in
seeing label updates on messages.
> I have confirmed that Thunderbird is sending the update to the server with
WireShark, its just additional users
> connected to the same mailbox do not see them.
Are the two clients connecting to the same Dovecot server?
> Marking a message as Seen/Un-Seen happens faster just not labels.
> If you have a label set when you mark a message as Seen/Un-Seen the other
clients then see the update straight away.
I don't see how that could be possible. Did you check with wireshark
when Thunderbird received the \Seen flag change or the label change? You
could try also if you can manually reproduce this with telnet:

telnet localhost 143
a login user pass
b select inbox

do the same with another session then run "c idle" in first session
and
in the second one run:

c store 1 +flags $Label1

Did it report immediately to the first IDLEing session about the label
change?

anyone seen this issue, its still plaguing us and also seems to have a 
knock on affect as our blackberries are seeing messages late

On 24/05/2011 10:44, Ricardo Branco wrote:
> Dovecot 2.0.13
> Centos 5.4 x86_64 2.6.18-164.9.1.el5 (on ESXi)
> OS/Logs on local storage, /home all on NFS server for datastore (NFS 
> Store Centos 5.5 x86_64 2.6.18-194.11.1.el5)
> Thunderbird 3.1.10 on XP/W7 Desktops
>
> We are seeing a werid issue where there is a delay of up to a few mins 
> in seeing label updates on messages.
> I have confirmed that Thunderbird is sending the update to the server 
> with WireShark, its just additional users connected to the same 
> mailbox do not see them.
> Marking a message as Seen/Un-Seen happens faster just not labels.
> If you have a label set when you mark a message as Seen/Un-Seen the 
> other clients then see the update straight away.
>
>