Version:           4.7 (using KDE 4.7.1) 
OS:                Linux

When downloading mails via a pop3 account, it happens that mails appear twice in .local/share/akonadi/file_db_data but only once in .local/share/.local-mail.directory/

In this case kmail shows the message twice. If you now tell kmail to remove duplicate messages in the folder both messages in kmail are deleted and also both entries in .local/share/akonadi/file_db_data and the one in .local/share/.local-mail.directory/.

It may be that this only happens for mails where a filter on incoming messages is applied which directly moves them to another folder. I will verify this and report back.

Other maybe useful informations:
- My local mail folder is a maildir resource.
- I am affected by bug 282160 "akoandi does not delete mails from .local/share/akonadi/file_db_data"
- Thomas McGuire said in bug 271231, that this is not a bug of the pop3 resource.

Please tell me what additional information may be useful.

Reproducible: Sometimes

Steps to Reproduce:
see above

Actual Results:  
some mails are shown twice in kmail

Expected Results:  
mails are only shown once

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