Data Execution Protection in Windows XP or Server 2003 may stop programs from running.

This has stopped me from running HP printer setup, Quickbooks setup, Add new Printer Wizard, and the SBS add new computer wizard.  Its a pain and I think its something we should turn off on all new installs.  Heres the article on how to do so by adding the “AlwaysOff” switch to the boot.ini file:

 http://support.microsoft.com/kb/875352