Smoothieboard - static resets the printer

I used to have an Arduino, then I upgraded to RE-ARM, and I recently upgraded again to Smoothieboard.
The problem I have now is that static electricity resets the Smoothieboard. This did not happen before with previous boards I used. My printer is a custom build, T-Slot aluminum frame, and I have the ground wire attached to the aluminum frame.
Do I have to attach the ground to the Smoothieboard? how to fix this?

Imported from wikidot