hello guys,my mtnl broad band is facing a problem from last 15 days,the problem is some sites are not opening in any browser (explorer,chrome or firefox). such as yahoo,microsoft,nvidia and many more,even i reinstalled my windows as i thought this may be problem in my computer,but even after reinstalling problem is still there,thn i connected my modem to another computer but the problem still persist,that obviously mean tht there is a problem in my broadband,i'm having 599 unlimited plan and a D-Link dsl-502t adsl router i have done everything recomended by 1504 agent like changed my ip adress and dns servers but nothing happn,i even tried to change my mtu setting but tht didn't worked from last 15 days im continously complaining on 1504 and everytime they says we will check and solve as soon as possible,but u can see they r not doing anything at all.please i'm very frustuated bcz of this i cant even open my yahoo mail,there are lots of important mails in it.plzz sumone help me out, thanxx in advance....:'(btw,m new here..so srry if i made any mistake...