Nero 6.6.016 freezes during data cd burn

When i go to burn a data cd in nero, it will get to a different % done, then freeze and not move any further. I have CCleaner, and have reinstalled nero several times. I can however use the basic Windows burning wizard to drag data to the disc then burn. I am running Win XP, and have tried many different cds, and burn speeds. It has worked in the past.
Any ideas?
Thanks