i have burnt both ways and my burning was much more successful (no skipping or errors) when I left the computer alone (I have a laptop that I play on while i wait that long seven - to - eight mins.. ha ha).. I also turn off my screensaver while I am burning.. I am pretty sure that is a personal choice though as its about 50 - 50 with my mates whether to leave it on or turn it off..
TCAS- is there an easy way to know whether your processor and motherboard are multi-tasking and compatible and if you have enough system memory not to mention a very good high-end video card??