Hello, I'm a newbie. I use a Mac Book Pro and, according to SLs techincal details it should work pretty well. It's 2.2 GHz with 8Gb of memory, 1600 MHz However, while viewing SL the hard drive speeds up and can be heard whirling away like a dervish, and the machine itself heats up to the point where you can get a red mark by touching it! The effect is, of course, worse on busy sims, but even standing in a sandbox a fair bit of strain on the laptop seems to be involved. Macs are, of course, individual beasts and, looking through the community here I see different people have had varied experiences with SL on a Mac. I've tried the SL viewer, Firestorm and Singularity. The first 2 had the same effect and the third ran very slowly. The basic advice of lessening quality, stopping music etc has had no real effect. If anyone can advise me of what to do, or give me any tips on how to reduce the strain my Mac's obviously having with SL, I'd be very grateful