Hi, Updating the situation, I already used -stable, and I am using now -current, and still the problem. I tried some browsers like (firefox, midori and chromium), and they get really slow when I am watching a html5 video, and it freezes all the time if the video is in HD.
Here is almost all the problem information:http://marc.info/?l=openbsd-misc&m=142385651303855&w=2 -- Regards Henrique Lengler