[Bug 280008] New: kmail silently causes data loss when when fetching mail from a pop3 server

[Christian Trippe]

https://bugs.kde.org/show_bug.cgi?id=280008

           Summary: kmail silently causes data loss when when fetching
                    mail from a pop3 server
           Product: kmail2
           Version: 4.7
          Platform: openSUSE RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: NOR
         Component: general
        AssignedTo: kdepim-bugs at kde.org
        ReportedBy: christiandehne at web.de


Version:           4.7 (using KDE 4.7.0) 
OS:                Linux

Have kmail configured to fetch mail from a pop3 account.

Sometimes it happens that kmail/akonadi fatches mail from the pop3 server but
the mail never appears in kmail.

I noticed this because on some mailing-lists I am subscribed to, mails in a
thread were missing in kmail.

As I am affected by bug 271231 (akoandi stores mails twice locally) I did a
grep for some unique string in such a missing mail (after I configured kmail to
leave the messages on the server and no longer delete them) for the relevant
folders.

The string was not found in ~/.local/share/.local-mail.directory and
~/.local/share/akonadi/file_db_data but in the binary-files
~/.local/share/akonadi/db_data/akonadi/parttable.ibd and
~/.local/share/akonadi/db_data/ib_logfile1

I am using the mysql backend for akonadi. I never noticed this with kmail2 from
KDE 4.6!

If I would have to guess I would say something between 1 out of 20 to 50 mails
is affected by this.

I see this behaviour with two accounts.

Please tell me which additional information I can provide to solve this bug.

Reproducible: Sometimes

Steps to Reproduce:
see above

Actual Results:  
kmail does not show some mails after fetching them from a pop3 server and they
are also not saved! This means data loss, usually without a chance to notice
it.

Expected Results:  
kmail saves and shows all mails.

OS: Linux (x86_64) release 2.6.37.6-0.7-desktop
Compiler: gcc

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