This unit is a complete piece of junk!!!  I had the same thing happen to me that Lindsey experienced.  Two books on the top shelf caused the whole thing to collapse and blew out the side panel.  A BOOKCASE IS SUPPOSED TO HOLD BOOKS!!!!  I could tell this was not going to be the most high end item given the price, but I have had the unit less than a week and it was purchased specifically because of it's size.  What a disappointment and waste of time.