The correct statement is 'some blocks are full'. You can't just jump to conclusions based on data recovered in the last few hours. Out of the last few blocks I see a few at around 750kb.
Um, i think that was the old hardlimit for blocks. Some miners did not update that yet. It's no proof that all transactions were cleared at that point in time. It's fully up to the miner how many transactions he want to put into a block. It would be convenient to check the last blocks and found one of these blocks with only one transaction, the block reward, and believing that it shows the network is greatly underloaded.