Just to recap, this is my system:

Fedora Core 4
kernel-2.6.12-1.1390_FC4
glibc-2.3.5-10

SourceMM 1.00-RC2 (Linux, glibc-2.3.4)

Maybe the problem is the glibc versions... it's supposed to be backward compatible though..

If I get time, I'll also try recompiling SourceMM I suppose. Although this currently appears to be working.