Problems with your printer?
One of the most beautiful things in Windows is that when you choose “cancel all documents” nobody seems to listen: nor printer and nor Windows.
Maybe restarting Windows could solve the problem, but today is not your lucky day, the documents remain in the printing list and you can not print anything?
To solve this problem you should stop the “Print Spooler” service.
To do that, go to START -> RUN -> type services.msc -> ENTER, search “Print Spooler” in the services list, right-click on it and then choose Properties, hit STOP, wait for the service to stop and then press START.
If you have Windows 7, probably you will not find the RUN command, but you can write “services” directly in “Search Programs and Files”. In the results list, you’ll find the “Services” shortcut, click on it, then go through the steps described above.