I noticed that VS2008 is constantly updating intellisense at 70-100% CPU usage - and I mean constantly. I have left my laptop on overnight and it was still updating this morning. I found several references to this issue in VS2005 but it appears to not have been fixed - hence my repost of the issue. Clearly disabling intellisense is worse since it is extremely useful. This is a large MFC/C++ project. Thanks, Todd