Has this happened to anyone?

The second row of letters is linked with the top row of numbers...

a1 s2 d3 f4 g5 h6 j7 k8 l9 ...?

A! S@ #D F$ G% H^ J& K* L(

numlock is off, NO viruses on the comp. Even apple care doesn't know what to do (they've never seen it before).

I've gone to System Pref > International > Input menu > keyboard viewer and sure enough when I press the letter s, I see the keys for "s" and "2" being pressed in the keyboard viewer ... Any ideas???