I'm trying to create a DVD with iDVD and it just wont work.. It gets to the 'Multiplexing and burning...' part, when it gets to around 10mins left the multiplexing changes to 'Lead write-in' or something like that, the disc spins up then back down, the status changes to 'done' with 9 mins left, the timer still moves but nothing happens, it gets to 1 min and hangs there. Had 3 attempts which has cost me almost a full day due to the length it takes to actually make a DVD. I've tried it on best performance and professional quality. Any suggestions?