I froze my Dad's b'day cake with it already torted and filled with Hershey's Perfectly chocolate icing (vanilla cake). It was terrible. I've frozen plain cake with no problem
, and maybe it's just that icing, but the cake tasted grainy and it was just plain nasty. Fortunately, I realized it and baked a fresh one for his birthday that morning.
Edit: I just realized the last reply to this post was 2009!
I had hit "newest posts" and didn't pay attention to how long outdated this one is. Sorry!