CD Disk I/O Error

[patkim]

I find that after a few weeks of use, CDs develop some fine scratches on it. Is this normal or I need to check something.
Also few of the CDs I had burnt a few months back have now started giving me Disk I/O error? What does this error indicate and could it be due to such scratches or some other problem. My CD drive is able to read rest of the CDs.
Thanks.

[Gecko]

Most likely the little scratches are caused from the CD Rom drive
not coming to a complete stop before the CD is dropped back onto the CD tray.

Did you finalize these CD's?

The Disk I/O errors could be caused by bad/cheep media.
I have found over the years that it is worth the extra money to buy quality CD-R blanks.