11.10 and the kmail debacle drove me off KDE and Kubuntu. Kmail2 was broken across several distros, so I don't blame Canonical for that, but they sure as hell didn't have anyone testing the kmail migration with any amount of mail. I moved to Lubuntu w/ Thunderbird (there's a python script floating around that converts kmail maildir to Thunderbird mbox) and Chrome and haven't looked back. Was able to move all but the last couple of months of kmail messages into Thunderbird. It's nice to have my computer back, not 99% consumed w/ running mysqld and nepomuk/virtuoso.