Mining rig is running

During Christmas I left my machine running. I was mining for Litecoins (LTC) at wemineltc.com, but I switched to mining for Florin (FLO) at bitezzeming.com. I had a look at the profitability of the different altcoins. I looked at coinchoose.com and picked Florin (FLO) with a 263% profitability over LTC (at 25/12/2013). I may have a flawed theory, but this is my view of it with a hashrate of 740 Kh/s. Correct me if I'm wrong.

Mining LTC:  0.24 Litecoins/day
Mining FLO:  600 Florin/day (1 FLO = 0.001 LTC) is about 0.6 Litecoins/day

Pic
This is a picture of my computer. The case stays open.

And my statistics for the last hours.

The hashrate averages around 0.78 Mh/s with a max of 1.06 Mh/s. The temperature averages around 68.24 Celcius with a max of 70.97 Celsius.

Stablecoin
I tried to do the math again for Stablecoin (SBC) with a 450% profitability over LTC (estimated).

Mining LTC:  0.24 Litecoins/day
Mining SBC:  371 Stablecoins/day (1 SBC = 0.003 LTC) is about 1.1 Litecoins/day

I switched to mining SBC on pool sbc.cryptoculture.net but I found out that mining SBC is very slow at a rate of 10 SBC/hour. So I switched back to FLO for now.