When you're running an application that's programmed by using the Session Integrator screen-scraping APIs, you may experience 100-percent CPU utilization.
This issue may occur when a status check in the Icom3270.wait method returns a session status of SessionOffline. This case is not explicitly handled.
The fix that resolves this problem is included in Cumulative Update 10 for Host Integration Server 2010. For more information, see Cumulative Update 10 for Host Integration Server 2010.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.