變了IE8之後,flash player就用唔到喇

我原本係IE7, 跟住down了IE8
之後上youtube, 就睇唔到野,
youtube叫我down最新的flash player..
那我down完adobe flash player 10 activeX之後
youtube,yahoo video等等, 都仲係睇唔到野..
都仲係顯示: Hello, you either have JavaScript turned off or an old version of Adobe's Flash Player. Get the latest Flash player.

而家連玩facebook入面個restaurant city都唔得,
那裡寫住:
if you have the latest flash player but you still see this message. please make sure the javascript is enabled in your browser.

究竟係咪個IE8有問題呢? 定係什麼javascript出問題???
我玩flash game (e.g. www.17playgame.com) 呢個都睇到畫面,
即係個adobe flash player冇問題啦, right????

點先check什麼方面出問題?
可唔可以幫我解決??? 唔該