There is a 32-bit and 64-bit version for Linux. There is an open issue with the current build dynamically linking to glibc that may be incompatible with your distro. If you have glibc 2.10+, you should be fine. Fedora Core 10 and Ubuntu 9.04 are known to have issues at the moment. We are putting out a static build, however, to make the executable agnostic to the other libs in the system.