Spaces definitely has its issues, that's for sure. Aside from the alt+tab problem you mentioned, it just started feeling really slow so I turned it off. I gues

Spaces definitely has its issues, that's for sure. Aside from the alt+tab problem you mentioned, it just started feeling really slow so I turned it off. I guess you could make an argument that Apple gets a lot of usability ideas from Linux, but when they go through the Stevejobsification Process they tend to lose some of their usefulness in trade for simplicity and prettier looks. I think the problem is that the only people who even notice these things are power users, so it's not even a factor in adoption rates.