I=92ve had this happen two times. Once turned out to be an intermittent Ctrl key. The other time I was using a Keyboard, Video Mouse switchbox to run two PC=92s with one keyboard, mouse and display. To switch between the two PCs, you could hit the Ctrl key three times quickly. Somehow that interfered with the normal use of the Ctrl key, and not just in LabVIEW. I disabled the Ctrl key switching and fixed that problem.
This may not apply to your situation, but it might be something to check. Ed
