I don't know what happened but my spacebar suddenly stopped working. Doesn't work on InDesign and also illustrator, haven't tried on other programs but pretty sure doesn't work on them either. It was working fine a few minutes before and boom! stopped working. I mainly use this for quick hand tool/zoom-in&out and this is very irritating that I have to actually have to click on buttons. This has happened to me before but I think it went out away when I restarted the computer or the program. Restarting didn't help at all this time. Someone please help!!!!! I use iMac 10.5.8 and it usually works great.