This past week I encountered an issue with my 13″ Macbook.  The rubber bottom started to peel away from the rest of the computer.  After some google searching I found out this was a widespread issue!  Apple knows of this problem and has a solution for those effected by this.  You can either take it to an Apple store to be fixed for free or do it yourself.  I opted to do it myself.  I got my kit today (for free) and the instructions are fairly simple, but I haven’t done it yet due to laziness.  However, if you have a Macbook created/purchased between 2009 and 2011 this can solve your problem.  Just visit Apple’s support website here.  This will allow you to do order a kit to do it on your own or direct you to an Apple store.