Thanks for the bug, this is already reported to debian BTS and seems to be fixed in 0.52-6 which is now in feisty.
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=345305 ** Bug watch added: Debian Bug tracker #345305 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=345305 ** Also affects: netris (Debian) via http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=345305 Importance: Unknown Status: Unknown -- netris crashes on startup (amd64) https://launchpad.net/bugs/82125 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs