[otrs] Cron jobs creating error email? - GenericAgent.pl & UnlockTickets

Hi, since I installed the cron jobs for user OTRS, I am now getting several emails with an error in them. the error is:- DBI::db=HASH(0x871f038)->disconnect invalidates 1 active statement handle (either destroy statement handles or call finish on them before disconnecting) at /opt/otrs/Kernel/System/DB.pm line 223, <PRODUCT> line 4. The jobs which I am seeing the error from up to now are:- Cron $HOME/bin/GenericAgent.pl -c db >> /dev/null Cron $HOME/bin/GenericAgent.pl >> /dev/null Cron $HOME/bin/UnlockTickets.pl --timeout >> /dev/null OTRS 2.1.7, CGI and Ubuntu 6.10. Are these anything to worry about? Can I stop them. thanks Mike