I own a 15 inch Macbook Pro (the generation of MBP's just before the little camera was added). Normally, my notebook works perfectly well, and I have had zero issues in the almost 3 years I have owned it. Today, a new issue occured. When trying to put a DVD into the optical drive, something was blocking me from getting it in all the way. I had no trouble ejecting whatever the previous disc was, so it is definitely not a previous disc that is blocking the drive. Has anybody on here had any experience with this happening? What could I do to fix it? I would prefer not to have to get it replaced.