At the moment I'm playing a bit with alien (for OpenVZ packages on Debian) and was wondering myself about one question for which I was not able to find an answer anywhere. Therefor I thought it might be smart to ask here :) The question is... If I convert a .rpm to .deb on a system, how compatible is this .deb package? What do I mean? Will the .deb be working on other systems as well or is it per-system, e.g. that on every system the .deb package will be little different? That i386 and x86_64 are different is clear, so this doesn't need to be answered :) Examples that would be nice to know are for example: .deb built on Debian 6 64-bit - Ubuntu 12.04 64-bit (compatible?) .deb built on Debian 6 64-bit - Debian 5 64-bit (compatible?) etc. Thanks anyone reading this / helping me! Regards, Michel