do you know facebook? why its connection is slow

Facebook is not slow,it is in your part. Its either your computer or your internet connection. About computer spec atleast Pentium III with 256mb of RAM this will be average already if you just browsing facebook for your speed testing. Internet connection 128kb is already fair but nowadays most of ISP offers 512kb the minimum package that you can get so you probably no problem with the above mention i know. Another thing i suspected maybe because of misconfiguration of your internet connection this is in your part not from your ISP. So you have to check your "embedded router/modem/wifi" because usually this comes with all in one, meaning this device served as you modem,router,wifi etc. misconfiguration of this device will affect your slow browsing. Alternatively, DNS of your ISP maybe also possible but this is very rare and just an option if you want to used other DNS like openDNS.

is happening me to sometime on facebook and same connection is in fanbox

Is this happening just with Facebook, or with the internet in general? I've noticed that Facebook will occasionally slow to a crawl, which I think is a problem on their end - most likely their servers are overloaded when this happens. If it's the entire internet that slows down on you, try restarting your router.

Im there in facebook .I dont think so if it is slow as its the best ever social networking site ever and its the most popular around the world if its slow then it might be your PC or the web browser your using but which webbrowser r u using??and even check maybe its your internet connection wihch is slow or having problems i hope i help you friend!