Yes, it looks like the wrong fork, I am showing a much higher diff for block 17389:
litecoindarkd getblock $(litecoindarkd getblockhash 17389)
{
    "hash" : "0d085a2fe6c923ed0934e7ed3fc1a9e6c83a2e14d16e9cb792e4e8ff020a351d",
    "confirmations" : 391,
    "size" : 249,
    "height" : 17389,
    "version" : 2,
    "merkleroot" : "1649077c6bce9da6a4180750be2628640425fb69088998feb0167547a47dab39",
    "tx" : [
        "1649077c6bce9da6a4180750be2628640425fb69088998feb0167547a47dab39"
    ],
    "time" : 1411006751,
    "nonce" : 61017184,
    "bits" : "1c015ad8",
    "difficulty" : 188.94675196,
    "previousblockhash" : "3f52259181fde3495f4ac1e37f5c3fa1650f674a4db4a4dad8cbf32cd5b6fd79",
    "nextblockhash" : "0b185ae5faf08ae6f981619c12b3ea4c8484eb887bf6c53a2237bb918af984d7"
}