I have a user running Outlook 2011 and Mountain Lion.  He was recently upgraded to a new MacBook Air from a MacBook Pro.  He'll be typing in Outlook or Word and the keyboard will randomly freeze up.  He doesn't notice it because he looks at his fingers when he types.  This apparently was happening on his MBP (Snow Leopard 10.6.8) as well.  It appears to only happen using Office 2008, specifically Word and Outlook.  I'm not sure what preference was carried over from the old machine that may be causing this.  Has anyone else had this issue?