You really ought to clean your keyboard, seems the "!" key is jamming.......
Edit: Apologies for the confusion folks, incase anyone else didn't know (gosh I'm so silly sometimes) you actually have to use the "shift" key along with another key to type an "!". So what I should have said is that his "1" key seems to be jamming......... or maybe I was just unsure what kind of keyboard the user was typing on - http://en.wikipedia.org/wiki/Keyboard_layout
You see, not all keyboards have the "!" on the "1" key..... hence why I said "!" key.