If you have the following error when trying to write DVDs with growisofs:

130449408/906477568 (14.4%) @4.0x, remaining 2:34 RBU 100.0% UBU  90.8%149061632/906477568 (16.4%) @4.0x, remaining 2:27 RBU 100.0% UBU  90.8%

:-[ WRITE@LBA=11d40h failed with SK=4h/ASC=08h/ACQ=03h]: Input/output error

   write failed: Input/output error

/dev/hdc: flushing cache

/dev/hdc: writing lead-out

Try to execute:

hdparm -X66 /dev/hdc

It will change UDMA transfer mode for your drive.

More detailed information can be found here: http://pcburn.com/article.php?sid=2127