conflict with Thread::Running

how do i trouble-shoot this?  conceptually, what is Thread::Running
doing to hammer DateTime's 'now' method?


guru> cat test
#!/usr/bin/perl
use DateTime;
use Thread::Running;
my $dt = DateTime->now( time_zone => 'local' );

guru> ./test
Could not find file for 'DateTime::TimeZone::Local::Unix' at /usr/lib/
perl
5/site_perl/5.8.8/load.pm line 256.
guru>

--sk