Currently, on Unix, applets are not printed when a Netscape page is sent to a printer. The reason of the problem is the print method (nsIPluginInstance::Print(nsPluginPrint*) has not been implemented on Unix. On Windows, on the other hand, the same print method has been implemented for years.

This can become a more serious problem when Netscape 7 is distributed as Sun's internal browser.

See bugzilla bug 27478 for some history of the problem.