KDE Print System seems to screw up CUPS

[Chris G]

I have two HP printers (a Laserjet 1320 and an Officejet 7310)
connected to my xubuntu 8.10 system.  One is USB and one is ethernet.
Both printers work fine most of the time but seem to get totally
screwed up when I print to them via "KDE Print System", this happens
when I print from Digikam.

So I now have two jobs in the CUPS print queue which are just sat
there doing nothing and neither printer works any more.  How do I sort
this out and how do I get to print successfully from Digikam?

-- 
Chris Green