Keyboard number pad not working

It could be your mouse settings. Your keyboard is set to move the cursor with your number pad.

To Slove this issue

  1. Go to System > Preferences > Accessibility > Keyboard Accessibility
  2. Select [x] Enable keyboard accessibility features
  3. Go to the tab Mouse Keys and deselect [ ] Enable keyboard accessibility features.

similar to article: http://arcanecode.com/2007/04/25/ubuntu-704-and-virtual-pc-2007-mouse-issue-workaround-sort-of/