Oh man... I've tried so many imaging solutions. Norton Ghost included. Nothing I've tried comes close to comparing the simplicity and efficiency of FOG. This summer I've imaged about 900 computers using FOG, and I imaged an additional 500 laptops last week during a 3 day period.
My setup is using a Dell laptop (Core 2 Duo, 4gb RAM, gigabit ethernet) with a 24 port gigabit switch. Running Ubuntu 9.04 64 bit + FOG 0.27.
If you need help setting it up, post back here. The Ubuntu/FOG combo is a fantastic imaging solution.