Cannot delete requestors/watchers

Hello. I have RT 3.2.3 running on the following platform:

FreeBSD 5.4
Perl 5.8.6.2
apache+mod_ssl-1.3.33+2.8.22
mod_perl-1.29_1

While I can add requestor/watchers to a ticket, I cannot
delete them. Nothing appears in the logs, even when
defining in RT_Siteconfig.pm:

Set($LogToFile , ‘emergency’);
Set($LogToSyslog , ‘emergency’);

Any ideas? TIA.
Viren Patel
Chemistry & Biochemistry
University of Texas at Austin