F8 is to activate Spaces so you can see them all, not to navigate from one to the other. oh, and ctrl-arrow is a pretty shibby combo since one is on one end of the keyboard and the other on the other end...
either way, i haven't seen a single CS3 user come in and say they use Spaces, which pretty much means it is a no-no for graphics/web work...
i still can't believe you guys maximize your windows...
i mean, as mac users, we have incredibly hi-res monitors and the os works in a way that you don't need to have maximized windows like in MS Windows...
which is something that bugged me during my first switcheroo days but i have come to absolutely adore, combined with expose, cause i can have as many windows on there at just the right size to see all i need and no extra space...
i mean, come on, use Spaces if you have lots and LOTS of apps running,
what's the use in maximizing your app windows, do you just like white space?
(which by the way consumes more electricity to display

)