A new printing hotfix rollup was released that updates the core print spooler components localspl.dll, splwow64.exe, spoolsv.exe, win32spl.dll, and Winprint.dll. This rollup is designed to reduce known issues such as printing performance, print spooler crashes, connectivity to print queues, and print driver installation.
To download the update and get more information on the fixes included in this rollup, please see KB article 2647753: Description of an update rollup for the printing core components in Windows 7 and in Windows Server 2008 R2
Many of the printing related support cases at Microsoft are resolved by one of the included hotfixes. We highly recommend installing this hotfix rollup when troubleshooting any printing related issues.