upgrade weirdness

[<cobaco@skolelinux.no>]

Hey all,

I've got a problem that's got me stumped:

cobaco@cobaconi:~$ sudo apt-get install akregator
<snip some irrelevant text>
The following packages have unmet dependencies:
  akregator: Depends: kdelibs4c2 (>= 4:3.4.2-1) but it is not going to be
  installed             Depends: libkdepim1a (>= 4:3.4.2) but it is not going to be
             installedE: Broken packages

yet

cobaco@cobaconi:~$ dpkg -s kdelibs4c2a | grep Version
Version: 4:3.5.0-1
cobaco@cobaconi:~$ dpkg -s libkdepim1a | grep Version
Version: 4:3.4.2-2
Config-Version: 4:3.4.2-2

Does anybody have any idea what's going on?
I'm mixing the alioth repo with unstable?