investigating 486260 I have discovered the following
the i386 package from the archive (uploaded by the nmuer) segfaults
the amd64 package from the archive (built by a buildd) runs and shows
the GUI (whether it does what it is supposed to I can't say as I don't
use the package)
A self built i386 package also runs and shows the GUI (whether it does
what it is supposed to I can't say as I don't use the package)
So I conclude that this bug must have been caused by something weired
going on on the NMUers build system and request a binnmu of the
package on i386.