I am running into problems trying to acquire new or upgrade existing software. I am running 10.5.8 and many programs want a more current version. If I upgrade to Snow Leopard will I be dissatisfied with the performance? How about then upgrading to Lion? I get the beachball of doom occasionally. 2.4 mhz Core 2 Duo processor, 4 GB RAM, plenty of disk space available. This is computer is for personal, not business use. Or should I save my money and wait until the Ivy Bridge processor is released? Suggestions are appreciated.