This has been a continuing problem since I got this printer: our Canon LBP5050n network printer only works occasionally, throwing up “network board error” messages when used under Windows 7. All documents, web pages etc. first have to be opened in our Windows Server 2008 (or my netbook, with Windows 7 Starter edition and Wifi connection), where printing goes fine. I have been changing router settings, putting the printer into different configurations, but nothing seems to be helping. It might be that this is caused by the complex network topology (there are several routers in our home network), but it is still curious that sometimes I manage to print a page from even these Windows 7 workstations, but then, quickly, the damn error message comes up again and the network connection to the printer is apparently lost again. Most annoying.