Symantec Ghost image takes a very long time... (Creating & Restoring)

Hi, Im new on the Forum

i jst want ask about Ghost Image creation & restoration...

I've Hp compaq DC 7100 CPU... i've create a Ghost Image of Drive C: (Win XP sp3 NTFS) and burnt to a DVD. now i want to insatll it with an Optical USB CD ROM, every thing is fine but it take a very very long time in restoration (Over two hours). . .  Plz help