cups, an annoying problem

[Joep L. Blom]

I have an annoying problem in cups.
In an former install I had a few printers connected to a server called 
server.group.nl I installed a new OS etc. and changed the name to 
server-new.group.nl.
Annoyingly now cups still sees the old printers 
(printer1 at server.group.nl) although it doesn't exist anymore.
When I want to remove it with cups I get a java error, When I remove it 
with 'lpadmin -x printername' it seems to be removed but it isn't.
The same printers on server-new.group.nl(of course with a different 
name) are correctly seen by cups and work OK. It is however, annoying 
when you want to print and choose the wrong name.
I googled but all solutions presented didn't work.
I hope somebody has a suggestion.
Joep