Everything Apple (the Mac heads thread)

I say no. I've still got an older macbook pro running 10.4.11, and its fine.
in my experience installing the latest OS on older hardware is a surefire road to sluggish, slow, and frustrating computers.
Sure you might miss a few features but your computer will last longer before needing to be junked.

Unless you really want iCloud, it's probably not worth getting Lion. Snow Leopard is a decent upgrade from Leopard and makes things a bit faster/stable.

Cheers.

I forgot that I have heard reports of the scanner I have not working with anything newer than Leopard so gonna stick as I am the now.