I made some tests with CloneCD. Usual settings.
1.) The copy runs always in a TOSHIBA SDM-1502 DVD-ROM
2.) Copy fails in Plextor PX40, PXW-1210, Mitsumi 4805
If I enable PlayBackup (the best tool next to CloneCD) with both "Securom" settings (Hide Burner & SecuROM2) copy runs in all units.
I assume this version of LaserLock has a special "CloneCD" Trap built in. I'll look further into this.