Seems you need GNU libc version 2.4 at least to run this. I have 2.3.6 and it fails: ./BRMH-2.5.0-x86-Linux-20080828-beta: /lib/tls/i686/cmov/libc.so.6: version `GLIBC_2.4' not found (required by ./BRMH-2.5.0-x86-Linux-20080828-beta) I have: libc6 2.3.6-0ubuntu20 GNU C Library: Shared libraries and Timezone ldd shows the same error: ldd BRMH-2.5.0-x86-Linux-20080828-beta ./BRMH-2.5.0-x86-Linux-20080828-beta: /lib/tls/i686/cmov/libc.so.6: version `GLIBC_2.4' not found (required by ./BRMH-2.5.0-x86-Linux-20080828-beta) linux-gate.so.1 => (0xffffe000) libX11.so.6 => /usr/lib/libX11.so.6 (0xb7e50000) libgmp.so.3 => /usr/lib/libgmp.so.3 (0xb7e20000) libm.so.6 => /lib/tls/i686/cmov/libm.so.6 (0xb7dfe000) libc.so.6 => /lib/tls/i686/cmov/libc.so.6 (0xb7ccf000) libXau.so.6 => /usr/lib/libXau.so.6 (0xb7ccc000) libdl.so.2 => /lib/tls/i686/cmov/libdl.so.2 (0xb7cc8000) /lib/ld-linux.so.2 (0xb7f43000) When I get my new machine I can try it with a fresher libc. Zach