Keyboard buttons becoming too sensitive!

Hey, I am thrilled with my Inspiron 6000 - now that I got a new cd drive... but anyway, my "A" key and my "K" keys have become too sensitive... for example, I caan rest my fingers lightly on the keys and they will behave as if pressed down. (i.e. - aaaaaaaaaaaaaaaaaaaaaaaaa - I did not press down the a key once)

Should I take my keyboard out and clean it, or is this a much larger problem I am faced with?