this problem me too I have had about 2 years ago now this all normal or too is virus what the PC have problem how the navigator and too problem how internet exemple:my internet is of 1 MB when did this happen to me my internet and too navigator back 2 click it back use ctrl +alt+Del this make 8 Goolge or another Navigador my internet this 12,90 KB/S may be virus too Navigador or the PC
Good wait have helped yours Good Night