regardless of whether it works in another browser or not ... suggesting someone use an alternate browser isn't a satisfactory answer b/c it is not listed as a requirement anywhere that I ever saw to use browser X or Z.
that said, a very quick test in IE9 seems to respond to the OK click when removing a favorite. but i only tested the one procedure.
and regardless of whether SP is optimized for a specific browser or not .. if you're going to popup an OK/Cancel dialog when someone clicks a button ... it shouldn't be a hard stretch to expect a mouse click on OK to actually follow through with the command.
| Pounds lost: 86.0