[Bug 272093] New: For some imap mailboxes, Kmail 'throws out' some messages when rebuilding imap 'INBOX'

[Alexander Bezrukov]

https://bugs.kde.org/show_bug.cgi?id=272093

           Summary: For some imap mailboxes, Kmail 'throws out' some
                    messages when rebuilding imap 'INBOX'
           Product: kmail2
           Version: unspecified
          Platform: Compiled Sources
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: message list
        AssignedTo: kdepim-bugs at kde.org
        ReportedBy: espera.dios at gmail.com


Version:           unspecified (using KDE 4.6.2) 
OS:                Linux

For _some_ imap mail boxes, when I fire up Kmail it shows the message list
correctly (say, 257 messages). Then either after some time (after several
auto-checks) or when I right-click it and tell to rescan, it first shows some
messages duplicated and the list is about 300 messages, and if I do a rescan
for a second time, it then gets reduced to a list of, say, 122 messages only
and never corrects itself until KMail is quitted and restarted.

Actually, this never happens to some imap servers, but always to some other,
always the same ones, so I figure this is in part a server-side problem, but it
never happens with other mail clients I tried to reproduce it with. (But I very
very need some kmail/kontact's features :-) )

I provided some additional info like console output below.



Reproducible: Always

Steps to Reproduce:
Perform a manual re-check of an imap account 'inbox' folder (right click and
"Check mail in this folder")

Actual Results:  
Message list cuts out a lot of messages

Expected Results:  
Correctly display all messages in the folder

This one I can't figure out or at least don't know any temporary workaround :)

The problem never arises if the account is set up as POP3 and the mail is
fetched.

At the second rescan moment, Konsole says this:
Application asked to unregister timer 0x5d000014 which is not registered in
this thread. Fix application.
kmail(25576) KMail::MessageListView::StorageModel::releaseMessage: Trying to
release a message at row 94 that no longer exists in the folder 

And, well, it happens every time. Recreating the account sometimes makes it go
for a short while, but after several re-checks, it starts again.

Hm, what else do I know up till now...
If a new message is received, the index is rebuilt correctly. 
After a manual re-check, the list breaks again.

System: Debian 6.0 stable, KDE 4.6.2 from "Experimental" repository.

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