WFPN High memory usage

I have a big problem with my RAM.

In fact, my WFPN consume huge RAM of my computer and i don't know how i can fix it.

http://i.stack.imgur.com/dNRgP.png

http://i.stack.imgur.com/kk5Ql.png

http:// i.stack.imgur.com/DiLED.png

I try everything, but not f ixed.

Can you help me?

Thanks.

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