Watch youtube videos more smoothly on firefox

Firefox is one of the reasons
which makes youtube streaming
slow..
So we are gonna modify it to
stream fast..
Actually firefox backsup
contents and tabs in every 10
seconds.....Which makes youtube
streaming slow...And
irritating....It sucks in every
3 seconds and all...
So lets start...
1. Type about:config in the
address bar
it will give you warning but
dont worry its safe and
reverseable..
So continue...
2. Now search for
browser.sessionstore.interval
now double click on it...And
change 10000 to 120000
now go to youtube and try to
stream....
Streaming will become more
smooth...Than before..