Bingowings said:
There's one thing I'm not sure has been brought up before.

When Lando tells Lobot to put the Stormies in the security tower Lobot's lips move as if he is saying something but no sound comes out.

I quite like the idea of Lobot not speaking at all so it might be an idea to stablilise his lips so he doesn't make lip movements but if the footage isn't to be altered perhaps putting something in there might make it sit better.

If I remember correctly, in the French dub (which I could only watch at the time when I didn't have the DVD's) Lobot actually replies something to Lando, like "À vos ordres" ("As you wish"). Maybe he did say something in some other mix which didn't make the final DVD?