The problem is that the build dependency say: libxmu-dev (>= 1.0.1-1), libx11-dev (>= 1.0.0-1), libxau-dev (>= 1.0.0-1), libxaw7-dev (>= 1.0.1-1) libxmu-dev doesn't seem to have a source package in experimental (yet?), but I assume it's having the same problems as all the others. The others are all missing the epoch in the version, and should says: libx11-dev (>= 1:1.0.0-1), libxau-dev (>= 1:1.0.0-1), libxaw7-dev (>= 1:1.0.1-1) Kurt