How much you're mining in USD exactly depends on lots of factors, for example the mining difficulty and the exchange rates. In the meantime the LTC/USD rate dropped a bit compared to it's highest value and the difficulty has doubled in a few weeks time.
Of course you can always try another pool, just to be sure. But the mining pool probably can't do anything about things like difficulty and rates.
Then please tell me 0.11something LTC for 24hours of mining with a 7990 at 1,394 Gh/s is 'normal' ? If that's the case then I will sell the gfx card today as it is 1000% totally useless then
Thanks