DSL help

[G G]

Turns out that this is one for the "I never heard of that before" files. I purchased a new Dell Laptop from Bestbuy around the same time this all started. Long story short, it's the frigging wifi card in the laptop. Shut down the laptop problem goes away, start the laptop and problem is back. Read up on the wifi card in this laptop and it's crappy. Not only did it make the laptop slow but it also somehow made every other device on the network slow as well. Traded it out for another (same exact one) at bestbuy and guess what? Same thing. Will be going back to bestbuy and getting my money back and get something else. This is the first Dell I have ever purchased and am now scared to ever buy another one.