12" Bottom Battery falling out

[Jesse Baldwin]

I apologize if this question is redundant, but I have a 12" powerbook, 
and the battery protrudes, ever so slightly, from the bottom of the 
computer.  It is the innermost corner, actually, that kind of sags out. 
  This doesn't affect the machine's performance, but it makes it a royal 
pain to use anywhere because it makes the notebook rock back and forth 
while i type on it--the sagging corner acts as like a fulcrum of sorts.

Does anyone know a fix for this? Will Applecare do anything?

Many thanks.