I have been following this:

https://bugs.kde.org/show_bug.cgi?id=286043#add_comment

and several other bugs, and have the following setup:

Standard Kubnuntu 12.04 with the Kubuntu Backports PPA added which gives me:

kdepim 4.8.5
akonadi 1.8.1
all libakonadi* libraries are 4.8.5 except
libakonadi-kabc4 which is 4.9.5
kmail 4.8.5
kontackt 4.8.5

Lots of other KDE components are 4.9.5, which all came from the PPA (apt-ppa add, apt-update, apt-upgrade etc.).

However, I thought taking this PPA would solve the worst of my Kmail problems (filtered messages with missing email headers, duplicated messages, many conflict dialogue message popups, reduced memory and cpu usage of akonadi/mysql/virtuoso).

Unfortunately, I am still regularly getting mails that are filtered, being stripped of their headers, making them almost compelte data loss (you can often see the body still, but if it's an html mail, it no longer gets rendered). Needless to say, the subject is "No subject" and all addressing info has gone. I'm using POP3, with just the standard Mairdir Local Folders from a fresh install of Kubuntu.

My filters are straight forward, through Bogofilter and Clam, mark if spam/virus and mark as read, and a few other filters based on subject followed by move to a sub-folder.

When it starts happening, the fix is to restart Kmail/Kontact and sometimes, a logout/logon, and even a full reboot, to be sure.

The bug report is marked as fixed in 4.9, which I now have, even though as I understand it, it's the Akonadi Mail Filter Agent doing this (but if so, why does kmail have to be running, before the filtering takes place?). I know that Akonadi 1.8.1 comes with KDE 4.9.x as I had 1.7.x with KDE 4.8.5 that came with Kubuntu 12.04, and from what I can see, 1.8 is the latest (which presumably the bug report says fixed in 4.9 means fixed in 1.8, actually?).

Should I expect this to be fixed, can anybody please tell me, and if so, it's not for me, so should I add a report to that (or another bug report)? (I spent a long time waiting, staying on Kubuntu 8.04/Kmail1/KDE3.5.9 due to the KDE4 early mess, and jumped in at Kubuntu 12.04/KDE 4.8.5 because it looked like KDE and Kmail were finally ready for prime time).

Any help, greatly appreciated!

Regards,

Matt. (big fan of KDE, love Kmail (even Kmail2 ), upset that my mails are being "destroyed")

To ensure proper reproducibility, can you upgrade the whole PIM stack to 4.9.5? This mixture is bound to cause problems (although it may not necessarily be the cause of your issue).

Thanks for the response. Weirdly enough, last night, I had a whole load of updates presented to me via the update manager. They were clearly the whole of KDE via the PPA (seperate to the other updates in the view on the update manager), but with no detail about the changes at the bottom of the screen. I was a little reluctant to do the update but I thought, what the hell (I have a backup of all my docs and my home directory), so let it go ahead. I made a note of some of the key versions, and now I have:

kdepim* are all now 4.9.5
akonadi 1.8.1
all libakonadi* libraries are now 4.9.5
kmail 4.9.5
kontact 4.9.5

I don't understand why the initial pull of updates from the Kubuntu Backports PPA gave me the previous funny mix of versions, and then a few days later, gave me more a selection of what I was expecting, but I seem to be where I thought I should be, now.

I also realised that I was waiting a looooooooooooooong time for each mail to be filtered through ClamAV, for some reason, so I have decided to switch that filter off (after all, it's not *really* needed, is it).

Fingers crossed now that I will indeed take advantage of the bug fixes I was hoping 4.9.5 was going to give me (the only reason I'm using the PPA is for the Kmail/PIM fixes).

We'll see how it goes, and if it's all good, I will report back, and then I will try and turn the Virus filter back on, to see what's what.

Cheers again (hopefully, my experience might help any Kubuntu 12.04 uses pulling their hair out with Kmail!),

Matt