How many litecoins are you expected to mine when you are mining at a constant 500 kh/s? A year ago I was consistently pulling 1 litecoin per month, but now I've been mining for over 2 months and I've only accrued one half of a litecoin. Has the difficulty raised that much? The site The pool I'm using is http://litecoin.miningpoolhub.com.