Problem Description

The CPU on the indexing server was occasionally at 100% because of the process dmsifilterhost.exe.  Turns out it was hanging on processing Office documents due to the incorrect ifilter installed.

Steps to Resolve

1. Uninstall the old version of the ifilter
2. Install the latest (as of March 2014: http://www.microsoft.com/en-us/download/details.aspx?id=17062)