gone fishing said:I wonder why apple would have them hack their macs in orther to enable monitor spanning?
Is this the only way to get a power mac to do this?
Assuming this is a serious question:
Any Mac that starts with "Power" doesn't need the hack. It allows spanning by default.
Macs starting with "i" and "e" don't allow spanning by default. They allow mirroring. The hack enables spanning on those systems.
Apple disabled spanning to help promote the sales of the Power line. There is no inherent technical reason why it should be disabled.
And, yes, I stand corrected - it does void your warranty. However, it's reversible and, as far as I can tell, hasn't failed to work for anyone. Perhaps it has - I just haven't seen news of it. Probably because it fried their Macs and they never posted again.