yes it is exactly taking a long time, but look on in from this side, when some currency get a bigger ratio than ltc, it automaticaly switch to another currency, then block is not founded on ltc, that means, you'll not get paid for anything, that's main thing.
Guys, please understand that it is just bad luck: sometimes you get more, sometimes you get less for you submitted shares.
you're right, i've already switched to WMLTC.
and about that luck, with small hashrate, there will be bad luck more often, than good luck,
people know about thi, because of that have a multipool so small hashrate,
if this will be sorted, then will be a bigger hashrate and a bigger luck, my brain explains it to me like this
Multipool has smaller hash power because it is a newer pool. The hash power of multiport keeps growing at about 10%-15% per week.
By the way: your LTC shares are valid for 24 hours. So, if a block is found within 24 hours after you no longer mining LTC, you would still get your reward.