It runs on my 64 bit linux systems though I did have a problem with the initial setup I was using. Not sure which it was, but I was originally running 64 bit ubuntu server with just the boinc-client package installed. Installed a 64 bit version of mint xfce, installed boinc (the full package which includes boinc manager) and it downloaded and ran enigma just fine.Hopefully this may help others; Enigma can only be crunched on 32-bit Linux, and so I required the 32-bit libraries for Arch here