Hello! I made a silly mistake and did an apt-get upgrade and forgot that my sources.list was pointing to unstable instead of testing. Then I made a even more silly mistake and didn't looked at what apt-get was doing. So now I have an testing/unstable-installation that is really unstable (e.g. fetchmail stops because of a segmentation fault).
I tried to find a way to downgrade back to only testing, but the only way I found would be to remove all packages not needed to install other packages and then doing a nearly complete reinstall. apt-get --reinstall doesn't work in this case because I have to replace packages with older versions of it. Can someone give me a hint how I can do this with less work of my own? Thanks! Stephen Rueger