As I am enjoying my new Ubuntu 11.10 OS (and impressed with it) I ran to some difficulty getting my Canon MF4150 printer to work. The printer seems installed properly (followed this post) however when I try to print something I get this error: printer-state-message="/usr/lib/cups/filter/pstoufr2cpca failed" I think I've come across the solution but I don't know how to apply it to my version of Ubuntu. Any ideas?