I've tried cd's in both, including a rewritable I used yesterday.
I was using 220.127.116.11, when I started having this problem I upgraded
to 18.104.22.168. Same problem.
Update: Nothing works on the lite-On. CD-R or CD-RW.
On the Panasonic CD-R, CD-RW & DVD-RW won't work.
On the Panasonic DVD-RAM Works.