THis problem came up recently on one particular computer I have. When holding down the shift button, and pressing the spacebar, nothing happens, ie the space does not appear.
However, this happens only intermittently, and I'm not sure why it sometimes works and why it sometimes doesn't. I thought it could be a hotkey assignment, but when I ran this hotkey program, ActiveHOtKeys, which detects used hotkeys, it turns up negative.
Anyone with some insight to share will be great