That's burning at 4½x not 24x as you have stated. Have you installed any of Intels "Application Accelerator" or "Chipset installation Utility" software lately. If you have, that might be one of the reasons you cannot select any other mode than P10. Is the Epox Board an Intel Chipset I'm not familiar with it.
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As Nero is stating it's burning at the correct speed (strange in itself) and it's taking so long, it does lead you to think that the CD Media may be at fault. Have you tried another type of media?