Anyone else have a issue with the unit get loud then not read the disc? I tried a DVD cleaning disc with the brushes, of course it wont read it but seems to spin it a little. I tried a method for laptops, taking a cotton cloth and a little alcohol with a credit card, insert in and out. After it spins a while it acts like its dirty, then wont read. These things are pretty bulletproof I thought. I'm going to do a upgrade but thought I would ask, thanks