For all of the many directions Ubuntu One's cloud storage has gone, it hasn't headed the Mac's way. Official clients have been the province of Linux devotees (naturally, Ubuntu is recommended) and their Windows friends across the aisle. A newly available Mac beta puts all three major desktop platforms on an even keel, very literally -- the OS X port is almost identical to what you'd get in Linux or Windows, including a few rough points where other interface concepts clash. Still, the Ub
