Since I recently replaced Ubuntu Feisty with openSuSE 10.3, all the software packages I kept in case of network failure were .deb packages, so I had to use alien to convert them to .rpm. I used alien before to turn leftover .rpm packages from previous Fedora and Mandriva installs to .deb ones.

What I've noticed is that it converted every package with no error, not even a warning (which is good, don't get me wrong), but in the past only some of the packages were transformed successfully. So I was wondering, is alien better to turn debs into rpms or it just works better on openSuSE (10.3) than it does in Feisty?

Did any of you notice differences from using alien on different distros or for different package transformation?