Why does my wi-fi keep dropping out with Lion ?

Why does my wi-fi keep dropping out since I purchased Lion?
Why does my wi-fi preference keep getting lost every time my computer goes into sleep mode?
Is there any way of killing the Lion and getting Snow Leopard back.
Signed,
Tim (Had a flawless computer until I purchased Lion!) Lyke
< Edited by Host >

I use homeplug powerline adapters to create my home Lan. I've never had any problem with my ATV 2.
This isn't ideal either, I would rather have shielded CAT7 cables reach all the way to my modem.
Either way, wired solutions are more reliable and have a higher potential speed as wireless uses pulsed electromagnetic radiation as a means for transportation in stead of copper or fiber optic cables
The World Health Organization's IARC has recently classified radio frequency electromagnetic fields as possibly level 2 carcinogenic to humans, concluding:
"the evidence, while still accumulating, is strong enough to support a conclusion and the 2B classification. The conclusion means that there could be some risk, and therefore we need to keep a close watch for a link between cell phones and cancer risk."

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