How is that going to work on dual 24" displays? Or even a single HD display? I currently have a web-browser, e-mail and 3 chat clients visible (Skype, Twitter and Trillian), plus I can see bits of iTunes.
Likewise, when working, I tend to have Word or Excel open on one side and a web browser or something on the other side, with dual monitors, I have the palletes or extra apps visible on the other screen.
I like iOS on a portable device, with a small screen, it fulfills its roll of getting limited information quickly on the move, but it isn't a good replacement for a desktop environment. I always find it frustrating, that I can't see the source information and what I am working on on one screen, when I have to work on a lo-res display.
A lot of desktop applications, like word processors, web browsers etc. just aren't designed to be run full screen on modern hi-res displays - and a lot of websites look dreadful, or are hard to read, if you blow them up to fill the whole screen.
Apple still need devices which can create the content for the iOS devices, which is currently only OS X...
"Do you know what this is? Hmm? No, I can see you do not. You have that vacant look in your eyes, which says hold my head to your ear, you will hear the sea!" - Londo Molari
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