How do I diag my router and wifi card?

[Mech0z]

I have
Thinkpad X201 Tablet with a Intel Advance-N 6200 wifi card
D-Link Dir-655

My pingtimes to my router http://www.gratisimage.dk/graphic/images/2011/March/14/73DE_4D7E303F.jpg about 2 meters from the router.
In school today I made a mate do the same pinging to the schools gateway and he also got less than 1MS while I got 3-10 and spikes up to 100

My problem is really not my ping times, but complete dropouts. And I cant really figure a way to tell if its my wifi card that drops out or if its the router.

And it happens pretty randomly, I was streaming an episode from my server yesterday and it constantly stopped due to dropouts.

I want a way to verify what component is bad so I can contact either Lenovo or D-Link

 

[amdskip]

Connect it to a different router/access point and test it. You could also have a friend do the same.

 

[spidey07]

Wireless can be slow/flaky due to interference and noise. Try wired.

 

[Mech0z]

Wireless can be slow/flaky due to interference and noise. Try wired.

Eh how is that going to solve my problems? Its not like I wanna carry around a cable wagan when I move abouts in my house. And there should be so close to 0% lag when within 2 meters due to interference

Anyway if I do a transfer of a movie file I get 5-10MB/s which is awesome, but if I start the application http://www.metageek.net/products/inssider/ I get lots of timeouts and the transfer speed is max 2MB/s but most of the time its not moving anything.

And I dont know why that app causes it to go so so crazy. But this is the only way I can provoke it to happen, but it also happens just watching movies (Using WMP or VLC is same result)

But the thing is, from these symptoms can it still be router?