The other payments have been consistent with just a few hundred GH/s, possibly powered by the three Avalons we know they have. But this last payment is consistent with about 1.2Th/s. Which means either a completely different person is sending them saved up BTC on their BTCGuild account, or they are actually up and hashing.
So yeah, in no way am I trying to defend Labcoin's behavior - if you think that their stock will start to go up once they prove they're hashing now would really be the time to jump in, maybe with a small purchase that you're willing to lose.
Hopefully this is going to be picking up soon but it really seems like they are hashing with 1TH+ now