Something really really wierd happened when I was viewing a replay(accually 2 replays) of a seige of gondor game where I pwned everyone with sauron in 5 minutes. But in the replay instead of sauron (muta) flying away, it just stayed there attacking things and eventually gets killed. 2 minutes after everyone leaves the game, which is when I won. Check this out:
UMS Replays curropt when you go faster then 2x, its normal, and if you watch it at normal Speed this shouldn't occur. It's either that or the whole replay is curropt, which also happens in melee games.
Um, If it's corrupt than wouldn't the whole replay be unplayable? The only part that's different is Sauron not moving. Heres another replay of sauron that the same thing happens. I also tried playing it at normal speed and it still doesn't work. The funny thing is that the muta can act on it's own, even though that never happened in the game.
There is 2 ways for it to be corrupt, either some units dont move, or its unplayable

Yeah i had a problem with this too. In a 7v1 hard comp game, I nuked all the humans (shame on me). Eventually i beat the computer by myself. But in the replay, it shows the computer rushing and killing everyone, me included. Then the replay does nothing for about a half hour. I'm sure that it's corrupted.
No, it's not a glitch, it happens in EVERY god damn replay. -_-
Ya, Blizzard was lazy and setup the replays in some flurked up way that almost kinda works acceptably about 1% of the time.
I'd wish they could just fix replays from previous patches. Last patch it was "You can't watch 1.09!", but with the newer patch 1.10 are unviewable and 1.09 can be seen. I played so many games in 1.10 and can't view any of them because they have a zerg in it.
And on top of that, I can't even revert to 1.10 to watch them; it says "A newer patch is already installed". The new patch messed up alot of things with replays. Before I would just revert to 1.09 to watch, and I don't have this luxury anymore.
That also happened to me it was crazy
i had a friend over at the time but we were lughing to hard it hurt becouse it showed that the computer took everyone out in 3 min.
and they kept attacking my base but i was invincible, but i wasen't invincible in the game becouse the computer became really close to taking me out in the game