I'd suggest that it may be the drive if it is a different drive from that used for the install.
I have 3 PCs and 3 DVDrs, 1CDRW and 1 DVDRW.
Of the 8 drives, one ( a liteonit DVDR) will not read DVD+R or RW's or DVD-R or RWs, and sometimes CDRWs.
Fortunately the DVD+ - RW is external firewire/usb drive, so no problems.
Why not try K3B to copy iso to hard disk? or try a LiveCD distro to copy the CDs?
Another thought - are the cd's that you are copying from 650 or 700 mb ? That's something that needs to be watched with some distros these days.
Bill
-- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
