When you select a unit, they say something to acknowledge their selection that gets very irritating when you have to select troops repetitively. As in every other game, Red Alert 2 offers sound controls. If that's too hard you can always turn the speakers off. What this means is that some vehicles are a lot slower than the others, they don't fire as fast, things of that nature. This has only occurred in the second to last mission of the Soviet campaign when the war factory was mass-producing apocalypse tanks.
Load times are also somewhat long.
Overall none of the bugs are show-stopping, and Red Alert 2 seemed very polished.