Sys::Gamin is a nice module, but has some problems when installing.
First make sure you have the "gamin-devel" installed (rpm, yum) or you'll get errors about missing "fam.h", and 100+ lines of other errors.
Then the test will fail, because the test script still references CGI::FAM instead of Sys::Gamin. Fix the test script, or just force the install.