FC3 upgrade breaks iso -> "write to disc" with "cannot open SCSI driver" error

[Gordon Mohr (@ Bitzi)]

In FC2, the right-click "write to disc" option for an ISO file worked like a
charm with no special configuration required.

After a recent upgrade to FC3, it fails with an "Error writing to CD"
dialog. Requesting "details" gives a window with the following output:

cdrecord: For possible transport specifiers try 'cdrecord dev=help'.
cdrecord: For possible targets try 'cdrecord -scanbus'. Make sure you are root.
cdrecord: Permission denied. Cannot open '/dev/hdc'. Cannot open SCSI driver.
scsibus: -2 target: -2 lun: -2
devname: '/dev/hdc'
scsidev: '/dev/hdc'
cdrecord: WARNING: This causes a high risk for buffer underruns.
cdrecord: Permission denied. WARNING: Cannot set priority using setpriority().
cdrecord: Operation not permitted. WARNING: Cannot set RR-scheduler
cdrecord: WARNING: This causes a high risk for buffer underruns.
cdrecord: Cannot allocate memory. WARNING: Cannot do mlockall(2).
cdrecord: Continuing in 5 seconds...
cdrecord: Future versions of cdrecord may have different drive dependent defaults.
cdrecord: Asuming -tao mode.
cdrecord: No write mode specified.

Any idea what changed (and how I can change it back)?

Thanks for any insights,

- Gordon Mohr