Comment Re:KMail (Score 2) 464
Actually, after getting out in (very rough shape) in 4.7, KMail got a new maintainer, and he's been fixing bugs and improving things like crazy (look at the commits by "montel").
Also other people have been working on other parts of the infrastructure and there are more fixes on the way.
Lastly, you're putting together two things unrelated to each other: Akonadi is a local cache for PIM data (contacts, mails, calendars...), while Nepomuk is a framework used to organize data semantically (and used a lot in other bits of the KDE platform), which is used in Akonadi to store mail and contact data for searching.