ah, the old...
... color wheel trick, \o/
needed reboot 4 me.
Go menu=>settings=>TSM parts=>statusbar settings and make sure there is no checkmark on hide clock then go down to text color, touch the outer circle near the white area then touch the circle in the middle, back out and try flipping the phone sideways so the screen goes from portrait to landscape. If that doesn't make the clock appear, just do a reboot and the new settings will take effect.
EDIT - also if you want the AM/PM to show make sure there is not a checkmark in Hide AM/PM
... color wheel trick, \o/
needed reboot 4 me.