CRC-error on the files that I burn

Hey!

[ul]
[li]I use Nero 5.5.10.35
[/li][li]I have a LG Goldstar burner.
[/li][li]I don’t know what firmware I have. (How do I find out?)
[/li][li]I bought my computer with the burner 2 years ago.
[/li][li]I reboot before I burn
[/li][/ul]

Everytime I burn a few files, some of them always come with a CRC-error. They can’t be copied and they can’t be used.

Does anyone know what I should do?