restart print manager

[Rares Vernica]

Hi,

I have a problem with printing. Everything is set up correctly and it 
prints fine, but sometimes it doesn't.

When it does not work, I have no idea what happens as I don't see any 
error dialog or something like that. The job does not show up on the 
printer queue and I think the job is not even sent to printer. If I want 
to check the printer properties, the Paper and the Advanced tabs don't 
show up correctly, they show up empty. The only way to fix it is to 
restart the entire system.

Is there a way to restart the print manager (if there is one)?

I usually print from Firefox and I use Network Printer - UNIX Printer (LPD).

Thanks a lot,
Ray