from somedays i am watching that my Micromax 310G modem isnt able to give me proper speed..
sometimes it cannot resolved to dns.. and remains unconnected..

but when i use straight dial up from network and sharing centre, it will work very well.. infact sometimes reacher more than 2.2 mbps..

please can someone please give any supportive reason for this.. ?

i have tried uninstalling, used revo.. seen each and every corner of my computer.. no virus..

accesspoints are correct, everything is correct... dont know whats the problem..