Andrew Schulman <andrex@alumni.utexas.net> writes:
> I've seen this problem come up from time to time before, but now I have it
> on a large scale:
You have two builds of the same package/version. Apt-get wants to
install one of them but your cache already contains the other one. So
every upgrade reinstalls the wrong one.
apt-get clean; apt-get upgrade
MfG
Goswin