There appears to be a fork in the network, some nodes are reporting block numbers at 17723, others are reporting 17735.

Explorer is stuck at 16299, so it likely never got updated.
This is what I get for block 17722:

litecoindarkd getblockhash 17722
c199d4c2c07d231d0e46323b763272ca94c0e13f4af069d7b704c72f579e143f