Bought a black Macbook in August '07, no problems. Went to do a clean install of Leopard the other day and it wouldn't accept my original disc. It would accept a copy of it, though. Come to find out, it won't accept any original DVDs (movies or data) or burned DVDs with DVD+R DLs as the exception. It will take all CDs, though. Firmware or...? I tried command/option/P/R already, didn't fix it.