my internet speed has gone rather slow, 15 meg. I have BT infinity and normally get 40 meg speed and use Firefox as a browser. i went onto internet explorer and started the same BT speed test for which i end up with 37.5 meg
looking into this, i have kaspersky internet security, i disabled protection and ran the speed test again on firefox and ended up with not 15 meg, but 38 meg speed.
the conclusion reached is that kaspersky for some reason throttles down your internet speed on firefox, but leaves internet explorer alone.