I don't see this happen, but what does always happen is if you set two or three random CPUs in a match, fairly frequently two of them will be the same character.
I wish Random worked like in 64 (forget if it's in Melee too) where it would show you which player+color your Random was, rather than not actually selecting it until the match starts.
--
The Temple of Kraden, a forum for fans of Golden Sun:
http://z9.invisionfree.com/The_Temple_of_Kraden/index.php?act=site