Excel 2002/HP Printers

[Martin]

Hi

I have 100 Windows XP Pro SP1 PC's all running Office Pro
XP SP2. All the PC's print to 17 HP 4300 DTN printers all
using the latest HP driver.
In Excel occassionally it will not print, no error message
or event is produced. If I change the default printer to
another printer then back again it will print fine.
There seems to be no pattern or particular type of
worksheet that is causing the problem.

Thanks in advance.
Martin