12.04LTS Wifi random occurance of disconnection (i know... i know just here me out)

[FenrirXIII]

I know i know it has been ask but i just want to make sure its not a unique situation.
Okay, in the past, It never used to happen but recently... more specific this past 3 days, my wifi randomly disconnect... sometimes its within minutes... sometimes its within hours earlier today i expercienced both: after booting to ubuntu12.04LTS within 5 minutes the wifi disconnects. restarted the computer then it worked fine... for at least 5 hours no wifi drop... I turn the laptop off then after 4 hours i turned it on again and it 1 hour in (more or less) it disconnected....

when it disconnects... it automatically try to reconnect but i waited and waited still nothing... i waited some more and it asks me to prompt my wireless password... i entered it and it still wont connect... it just keepts looking like its trying to connect (scan animation).

the only solution that worked best is restarting the computer.

i tried a couple of remedies:
sudo rfkill unblock wifi--------------------------------nothing happens (still scan animation)
Fn+F2------------------------------------------------------disable my wifi but then it wouldnt let me reable them or at least it takes several try of Fn-ing and F2ing
sudo gedit /etc/modprobe.d/ath9k.conf--------looked promising but after a day... it still happened.
sudo gedit /etc/rc.local------------------------------again looks promising but the results are the same.

windows7 home edition seem to work fine.

theory:
when i watch youtube... thats when i notice it happening...(or at least because the video stop to load) (this is the most noticeable one)
wireless router is within 15 inches raduis of my laptop (which when it was further a couple of days ago... i notice it happening but i cant leave out the possibility)
when the laptop isnt in use (i mean just idling) ... it doesnt occur

well right now as im typing this im about 15 minutes in and nothing is happening so far.. (cause i dont have any youtube.. (flash?) on?)

Using Dell Inspiron N5040 with dual boot (ubuntu 12.04LTS & Win7HE)

lspci
wireless is:
Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01)

firmware-b43-installer & b43-fwcutter (is installed... dont know if thats relevant)


thanks in advance!

also do care to enlighten me with the g/b/n or whatever it means. i know youll probably throw me at wiki but i rather hear it here from you guys

ADDITIONAL DETAILS

wireless router is NETGEAR
driver is ath9k

also yes.. i did the: options ath9k nohwcrypt=1
on the ath9k.config.. as well as on the rc.local

another theory
when i prompt my password to login ubuntu12.04lts... i click on FIREFOX right away...(i dont remember if i always do that though) (maybe it was still loading driver?)
wireless network name is 'virus.exe' (yeah i name it that way so the neigbor may think twice on trying to use it. (maybe the .exe is interferring?... but i doubt it)

im a bit iffy on making some of those .conf... cause one) i dont know how they work.. two) i dont know what those command means nowcrypt...iwlwifi (or whatever)

i mean ill do em but i kinda want to know what those command means first so i can get a sense on what im doing...