i recently bought the dual 2.7 processor powermac g5 and im starting worry about my purchase a little. When i try to do little things and all theres always this little delay i run into. Also when buring a dvd its not quite as fast at rendering as one would think, i was under the impression that two processors would finish that encoding task in under an hour for a full dvd. Is it my dual 2.7 or the fact i only have 512 ram. Should i boost it up to 1.5 gb of ram and then i will notice a difference?