So I bought a Lenovo G575 laptop for learning purposes and found that the connection just simply disconnects if i'ts in use for downloading and it also does disconnect in every 2-5 minutes while browsing.I tested the card with Win7, it worked nicely.Since then I searched through all the topics connected to this card, also tried using older distros, Maverick ended up with the same results as the actual 12.04 distribution.I dont think it's the router cause i could access it from Win7.It's causing me a trouble using an external usb, cause it's taken from another PC in the house.I would be really grateful if someone could explain what should i do to fix it.

Thanks in advance for the help