I have Adelphia cable (about 4mb down) and have have been having problems with wireless speeds. I am 10 feet from my router and get only about 750kb to 1.5kb. I have talked to tech support and they are no help. Wired speed is 3.7mb - 4.2mb. What settings has everyone tweeked to get the most speed out of wireless? Firewalls and security off. Any suggestions?