I have a MacBook and I've been having problems with my disc drive for quite a while. First it was really tight and wouldn't accept any discs at all. I took it to the store and they forced open the opening.... which was kind of upsetting because I could have done that myself and now there are all sorts of marks around it. Now the opening is tight again and it only reads discs sometimes. For example, I just put in a dvd and it wouldn't show up on my desktop at all (the dvd playing application opens though) but only a couple days ago it recognized at least five cd's I inserted. About a month ago it recognized a dvd I put in. The cd's I put in are also coming out scratched. Also the dvd will play on another computer. Any ideas what could be wrong?