While printing documents one after the other in Windows Vista / Windows 7, your print job may get stuck sometime. It could hang all the other jobs because Windows stores them in the print queue or spooler. The best solution to get rid of this problem is to delete all the current print jobs in the print spooler service. But before deleting them and clearing the print queue, you have to stop the service. Here is a step by step guide to stop print spooler, delete all the current print queues and start it again.
Your print queue is cleared now. You can start printing your documents again. If your printer gets stuck often, you could make use of this technique.