dear Lord Of The rings,
First , thank you for your time & concern.
second, I tried that also but nothing improved.
third, I know that the brick wall refers to a firewall that interfere with the connection , but I know it's not mcfee nor linksys & I think It's not my isp because I'v been using LW for 3 days without any problem...so I don't know what else can I do.
do you have any ideas???