On 11-06-14 11:59 AM, Ken Teh wrote:
> I have a user who's print job was cancelled and he now gets dialog box popping up every minute telling
> him so and suggesting he find out why.  And little else.
>
> Sound familiar?  Is there a simple way of shutting up the machine short of shutting it down?

You can try clearing the printer queue... Perhaps it's continually 
trying to print and failing?

Or, try restarting CUPS:

/etc/init.d/cups restart

-Chris