Well, the thing with the shortcuts:
Ubuntu: Ctrl+X == Mac: Cmd+X (=the Command-Key, old Mac users still
call it "Apple-Key" although there is no Apple on it any more but a
kind of knot)
and so on.
I just tried it in Lyx on MacOSX:
Alt+arrow and Ctrl+arrow do the same thing in Lyx.
In Openoffice on MacOSX they behave differently (right arrow here):
Alt+arrow == jump to the end of the next word
Ctrl+arrow == no function, just as arrows alone
Command+arrow == jump to end of the line
Anyway, when I work with the GIMP on a Mac I have to use Ctrl+X
instead of Cmd+X, as GIMP runs in a seperate X.org on a Mac.
My Mac-only Editor uses Ctrl/Cmd or Alt+X to jump to the line endings.
I have to learn shortcuts for each App. And when I switch Apps or even
more when I switch OSes (what I frequently do: I work on a Mac, in the
Lab we've got a WindowsXP-PC and my Netbook is running Ubuntu) I mix
it up frequently.
So maybe that's why I prefer to use a mouse: Every program uses
different shortcuts but the mouse (nearly) always does what I intend.