Printer receives data but does not print

[Neil]

I am using Ubuntu 10.4 on an Acer 5338 and a Brother MFCJ625DW.
Today I installed mfcj625dwcupswrapper-1.1.2-1.i386.deb and mfcj625dwlpr-1.1.2-1.i386.deb in usr/share/cups/model.
When I try to print a document the printer says it is receiving data but does not print. The job list says the print is complete.
An ideas as to what may be wrong and how to fix it will be very welcome.