Far as I can tell, someone wrote:
>Can you leave a cake that has cream cheese icing unrefrigerated? I just
>made a carrot cake with one and would prefer to leave it covered on the
>counter but will put in the frig. if it is required. 8 Oz cream cheese - 2
>cups powdered sugar + other stuff.

I don't like to take chances with dairy stuff, but cream cheese has
always seemed more stable than others. A day and a half wouldn't hurt.