WRT150N - Very Good Signal with little or no connectivity from wireless computer

I just hooked up my WRT150N today and have had countless issues with the wireless connection.  Literally only 50 feet away and I was having LOW signal strength and intermittent connection.  After HOURS on phone with tech support, and after downloading the firmware to no help, they said to just play around with the channels until it improves.  Well, I followed some advice in one of the other threads and suddenly the strength jumped up to Very Good.  The problem is that it shows 4 out of 5 bars lit up and at times all 5 bars lit up but it still says Limited or NO connectivity.  Anyone know how to fix this?  I reset the settings based on the advice of another thread and have LOW signal but yet excellent connection and video feed.  I'd prefer the "Very Good" strength AND great connectivity which is obvious.  Does anyone have any advice?  Thanks!!!! 

You can be physically close yet have poor signal strength is you have a very absorbent wall between the client and the router. So that's one ting to watch for. Having the router near any metal, cordless phone system, the ground, or other absorbing material (think of things that absorb water, like drywall) will also reduce signal levels.
Most often this sort of problem is interference from other routers that your neighbor has nearby, or cordless phone systems, which share the same frequency space as 802.11 routers.
Install the utility "Network Stumbler", available free from http://netstumbler.com/ Then check for what other routers and clients appear in NetStumbler, the channels they are on, and their signal strengths (as well as yours). You can use this to find a channel that is less congested and spaced far apart from competing channels (they overlap in frequency significantly), as well as to optimize your antenna orientation, router location, client location, and router settings.

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