Recently Toast quit burning dvds. Well it was doing it sporatically. I was using dvd-r's. I used a few dvd-rw's and they worked. It took a little while for the writer to start up but it worked. Then I got some more dvd-'s thinking the other batch wasn't working. And it didn't work on these either. Then I decided to put one of the old batch of dvd-r's in and try it and it worked. Then I tried it again and it didn't work. It will rip dvds and i've burned cd's from itunes. Anyone else having issues? I can't figure out what's going on. Is it Toast? Is it my superdrive?