我將FF最新版本(2.0.0.11)安裝在Vista 64位元下，也到http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash 下載了flash player plugin安裝。

剛裝上去後都OK，關掉FF再開啟也都運作OK。但是只要我關機後再重新開機開啟FF連到有Flash的網站，就會顯示要我安裝Flash的plugin，屢試不爽。請問這問題要如何解決呢? 呵呵 看來Vista 64bit的問題還真多阿..

自問自答
找到解決方法了

1. Download the XPI archive of the Flash Player Plugin to your hard disk. XPI archives are only ZIP files containing the files used by the plugins.
2. Extract the files in the archive
3. Copy the files flashplayer.xpt and NPSWF32.dll to %APPDATA%\Mozilla\Plugins\ where
%APPDATA% is the folder which holds your applications profiles and settings. (You can open this folder simply choosing "Start → Run → Type in %APPDATA% → OK")
4. Restart Firefox
5. Enjoy your flash websites!

參考網站:http://www.varesano.net/blog/fabio/installing+flash+player+plugin+firefox+without+having+administrator+access+or+premissions