wifi connection problem

hello. i have a good connection from a wifi hotspot. but my problem is that i can browse the internet sometimes and sometimes not.
and when i go out of my house, i still have a good connection and now i can browse the internet without problem.
what seems to be the problem? my netbook or the wifi source? thanks.

 

You may have to monitor the traffic on your wireless to see what's happening. If you have ddwrt installed on your router, it can show you who is on, how much they are using, and the signal they are sending. I'm not sure if any factory routers have even bothered to install such tools by default. I guess they think useful information would only confuse customers.

 

the wifi is not mine. its from our coffee shop neighbor.

 

it could be intereference from the exprosso machine maybe or a microwave oven

 

hello, i have done pinging in both places and it turned to have no loss, outside and inside the house but still i could get the same problem.
there is a connection outside the house while inside there is none.