[Bug 149180] New: [data loss] Kontact Mail zaps messages to Unknown Sender, No Subject, 1970-1-1 when clicking on it

[Lophiomys]

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http://bugs.kde.org/show_bug.cgi?id=149180         
           Summary: [data loss] Kontact Mail zaps messages to Unknown
                    Sender, No Subject, 1970-1-1 when clicking on it
           Product: kontact
           Version: 1.2.5
          Platform: Ubuntu Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kdepim-bugs kde org
        ReportedBy: lophiomys gmx at


Version:           1.2.5 (using KDE KDE 3.5.7)
Installed from:    Ubuntu Packages
OS:                Linux

Kubuntu Feisty Fawn with KDE 3.5.7, Kontact Mail 1.2.5
Severe data loss:
I have configured Kontact Mail/KMail with a POP3 server and downloaded intitally
2099 messages. 
After deleting some newly arriving messages, Kontact rendered mails which where
clicked on in the mail list view to:
>> Sender Unknown, No Subject, 1970-1-1 << 
I could not recover these mails. (also not by copying them to a new folder).
After restarting Kontact Mail the problem prevailed.

see also:
https://bugs.launchpad.net/ubuntu/+source/kdepim/+bug/50039