We recently installed a new Kyocera 5035 copier/printer. This has been set as the default printer for most people. Excel, Word, Notepad & Reflections ( a terminal emulation program) correctly pick up the new default printer. Thunderbird does not. When print is selected , the dialog box comes up with another printer as the default. Changing it works only for that print. The next time something is printed, the same printer (not the 5035) comes up, even without exiting the program. This happens in xp pro & 2000 pro. All printing is done through our file server running Win2k server. Both the individual pc's and the server have been rebooted.