speedtest on firefox is slower than a speedtest on internet explorer i'm talking the halve slower...
when i do a speedtest on speedtest.net i should see a speed result of above 100 mbit cause my connection is 120 mbit down
in firefox its always halve like 50 mbit max and in internet explorer it shows the correct speed...
before i never had problems with firefox but with the new updates not...
Chosen solution
speedtest uses flash for speed measurements & adobe has introduced a special protected mode for its flash plugin only for firefox, which might cause slowdowns when there is interference between the following processes (so you might not observe it on IE or other browsers): firefox.exe, plugin-container.exe & FlashPlayerPlugin_11*.exe - please make sure that norton's firewall or av-engine isn't blocking/sandboxing them in any way.
alternatively you can also try disabling the protected mode for adobe flash & see if this is making a difference...
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Do you perhaps also know how to get rid of the bug that causes all your right click options in firefox to go black?
Thats one annoying problem :S
Modified by broken
Yeah, I edited it cos it wasn't that clear. Just added a couple of line-breaks.
Not sure about the right-click problem.
Modified by PeterB1970
Try using speedtest.btwholesale.com I discovered the problem on my PC running XP was being caused by the AVG 2013 (free version) WEB Brower protection. Speedtest.net was showing half the speed when using Firefox. speedtest.btwholesale.com showed the correct speed. Curiously my other PC running Windows 8 doesn't show the problem even using the same versions and options of Mozilla and AVG.
Modified by higgslane