Sticky Keys

I have a sticky space bar at the moment. It doesn't look like it now, but I tell you it is sticking. I have to make a concentrated effort to push the space bar in, or no space will appear. It is most inconvenient, as I have things I want to type, and refuse to carry on in this way. Idon'twantallofmysentencestoenduplookinglikethisone. For real though. That was with me hitting the space key normally. Now I have to take this bloody computer apart and figure out what on earth is wrong. This could get messy.