Help Buttons behaving erratically on the physical keyboard

[m9105826]

Some of the buttons on my physical keyboard have started to perform strange actions. For instance, my 'a' button will only highlight any text entered in the field in which I am trying to type. It doesn't seem to do this in Handcent, but it does in the browser and the marketplace. I don't think there are any other keys that behave like this at the moment, although my 'c' key was previously unresponsive as well. Any help would be nice!