For the select customers facing Inking issues with OneNote 2010 we highly recommend that you install the newest update released today.  This update contains fixes for many of the ink issues you all were facing. 

Update for Microsoft OneNote 2010 (KB2288640), 32-Bit Edition

Update for Microsoft OneNote 2010 (KB2288640), 64-Bit Edition

Microsoft has released an update for Microsoft OneNote 2010. This update is an accumulation of the latest fixes, including solutions within the ink feature, and with the linked-notes feature affecting Turkish language users.

These should also be available on Microsoft Update (Windows Update) later today but if you want to install the updates right away please use the links above.  Again thank you for using OneNote your patience.  If you face more ink issues please comment below and we will continue to monitor customer feedback (per usual).