[CentOS] CUPS problem

Hello,

I am running centOS 4.3 and my cups print server suddenly 
stopped working,  now when i reboot the server it hangs a 
time starting the cups service and when finally the system 
boots up, everything remains in the queue but not printing 
at all. Strange thing is all the print jobs appears owned 
by the user nobody.
anytime i try to cancel a job i cant because it tell me i 
have no rights to do  it despite im logged as root.
Via webmin i got the error: lprm: unable to lprm jobs

I will appreciate any comment or tip.

Regards,

--Ivan.