I get this error when I tried to write some files to a blank dvd+rw

Code:
growisofs -Z /dev/cdrom -R -J /mnt/seagate/

Code:
/dev/cdrom: "Current Write Speed" is 2.5x1385KBps.
:-[ WRITE@LBA=0h failed with SK=5h/ASC=64h/ACQ=00h]: Input/output error
:-( attempt to re-run with -dvd-compat -dvd-compat to engage DAO or apply full blanking procedure
:-( write failed: Input/output error
I also got this error on k3b.

help......