Office 2007 Pro Plus (using VLK) on Terminal Server 2008 - freeze

Installed Office 2007 Pro Plus on Terminal Server 2008 sometimes Excel will freeze on remote users and other times it will work for 2-3 weeks without a freeze.

Investigation, findings and recommendations:
Add winword, excel, etc to DEP

DEP:

• Click Start, click Run, type sysdm.cpl, and then click OK.
• On the Advanced tab, under Performance, click Settings.
• On the Data Execution Prevention tab,
• Make sure The option "Turn on DEP for all programs and services except those I select" is selected
• Example: Add: c:\Program Files (x86)\Microsoft Office\Office12\excel.exe
• Add all exe files for Outlook, word and excel.