[otrs] Software error

Hi All When I try to Reply to a ticket I get this: Software error: Modification of a read-only value attempted at /usr/lib/perl5/site_perl/5.8.8/i686-linux/Net/DNS/Question.pm line 47. For help, please send mail to the webmaster (root@localhost.localdomain), giving this error message and the time and date of the error. We have been using OTRS for more than 3 months now, with no problem. Today we got this, with no aparent motive. Does anyone know how to fix this? Thank you, Miguel