Get RT errors in virtual host log?

Hi - not sure if this is a mod_perl or RT problem:
I have several namevirtualhosts on apache 2 with mod_perl 2, and while each
has an errorlog directive and writes in it as expected, the RT messages, and
only those, go to the main server error_log file. Reading through
Apache2::Log it seems I should include PerlOptions +GlobalRequest in
httpd.conf and override warn() with use Apache2::ServerRec qw(warn) - which
I did, at the beginning of
Still, any warn() goes to the mail error_log, while Apache errors - those
not handled by RT::Mason - go to the virtualhost file.