If this appears to be the case for your environment, disable default IDE Intellisense in C/C and show only Intellisense from Visual Assist, or pause default IDE parsing when Visual Assist parses.Note: disabling of IDE Intellisense may disable the IDE Class View, render inoperable Add Class Wizard, and disable other IDE features that rely on default Intellisense.I am having trouble with my Visual Studio 2005 Intelli Sense for some time now.It used to work fine, but for some reason the 'Updating Intelli Sense...' does no longer seem to be able to complete for the solution I'm working on currenly- it simply gets stuck somewhere at about 3-bars of progress and blocks one of my precious CPUs for eternity.Disabling or pausing of IDE Intellisense varies by IDE. Delete NCB existing NCB file(s), and create two, read-only, zero-length NCB files in the base directory of your solution, and one in the %TEMP% directory. Re-enable default Intellisense by deleting the NCB file in the solution base directory.
:-) I should note that I haven't had the issue since upgrading my RAM. If only one file/window appears to be affected, close and reopen that file. In Visual Studio: What works for me is removing the dynamically-built file (Solution User Options), in the (hidden) directory located at he same path as the solution file.
Visual Studio 2005 Service Pack 1 and all hotfixes which rely on it are I have found that the best fix for Intellisense in VS2005 is to install SP1, and then this hotfix: 947315.
It has the added benefit of fixing most of the multi-core build issues.