MS OFFICE BLOG: “In response to some feature and performance issues that some of our users had reported on the OneNote 2010 forum on the Microsoft Answers site, the development team has released a free, optional update for the full version of Microsoft OneNote 2010.”
This update improves the display of search results and inserted documents and improves Optical Character Recognition (OCR) and indexing features in the application.
Download –> OneNote 2010 Update (64-bit version)