failed to connect to Host server.

Hello all ,

well , in last weak i always got this error , idk why i have checked every thing....

virus and download the new update of win7 ..change my network card to fix it nothing happen

the same error , every time i connect to play at any room ... my ping is good 56~ 67 then

Suddenly it's goes to be 207 ~ 287 ....then this message pop up...

http://img140.imageshack.us/i/crossfire201103170000t.png/

please any one know a solution , please add comment it's may help.