When I try to copy an audio cd or a vcd, the following messege appears: Sorry, the operation cannot be completed because an unexpected error occured. (Error code-8058) Also, when I tried copying a dvd via disk utility, the result was a dvd-r that had no free space but had no content either. More so, the macbook won't mount the dvd-r when i insert it. Could something be wrong with my macbook? i followed the instructions in the disk utility to a T. so far, i've only been able to burn cds using itunes. Any help would be most appreciated. Thanx!