Creating partition map taking a long time...

Hi all,

I am having issue with my MacBook Air which has the 80GB Samsung hard drive.

I have booted with the Leopard CD and I am using the disk utility to try and delete the volume and start again.

It has been sat on "creating partition map" for well over an hour now.

Just wondering how long I should be leaving this?

If I try to exit disk utility it tells me there is a task in progress so I assume it has not crashed.

Thanks in advance.