I run Maple11 on a Kubuntu Hardy Heron system that uses CUPS printing and printing generally works, even for Gnome apps.

I Googled and found that others had the same problem with Maple11 and there was a reference to this:

http://www.cups.org/articles.php?L433+I0+TFAQ+P1+Q

I followed the advice to make a /etc/cups/client.conf file and add the line ServerName=localhost to that file and to also export the environment variable

CUPS_SERVER=localhost