On occasion, my "3" key stop functioning. Yea, i know what your thinking... replace the keyboard. Well here is the "random" part. Not only will the 3 key not work, but if I do a num lock 3... that does not work either. BUT..... if i am in VMWARE linux, the 3 Keys always work. I make do, and is not mission critical... but would like to know . Thanks .