bad burn - and/or bad media ...
note; no error tests / write strategies (Disk quality) were run before the burning, in this situation.
I wouldn't go so far as to say 'your wrong' - just b/c if there's one thing you learn when diagnosing PCs over many years is to expect to be surprised with anomalies, or exceptions to the rule, or just ghost in the machine type behaviors
It seems the OP is able to select 1x in CloneCD when burning "Pressed" (store bought) CDs - which work fine in his dad'd stone age cdrom...just not when burning PhotoCds (or Data CDs). But a PIII box is certainly new enough to deserve atleast a New CDRW IMHO. (check your local cracker-jack boxes folks )
...hmmm just noticed in Nero DriveSpeed (v1.60) - that in "Options" under "Speed Settings" - you can use the ADD button to add specific Drive speeds to the already existant speeds...for ex; I originally had 2x, 4x, 6x, 10x, 12x, 20x, 32x, 40x 48x available, and I just added 1x and 5x to the list
this site seems to be having Image/Attachment "upload errors" - so;