I seem to recall needing another step during gearmand installation. It comes with some perl modules like Gearman::Server that (for me) ended up in ~/dw/share/perl/5.8.8/Gearman/ so I had to add that to PERL5LIB in ~/.bash_profile in order for gearmand to find it. I don't remember exactly what command I used to install gearmand but it probably involved 'perl Makefile.PL' in some way.