no websites to clear

In the past I have gone here to clear websites (Website Storage Settings panel)  http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager07.html

The slider bar has None (all the way to the left)  I can't change that.  It defaults back to none.

FF and Flash recently got upgraded.  Ever since then I don't see websites to clear.  Mozilla FF  4.0.1  Win xp home edition sp3  Flash Player version  WIN 10,3,181,26  

Global Storage Settings panel    http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager03.html#117498

has 1 mb

Check marks are on:  allow third-party flash...

Store common flash components...

I have never touched or changed any settings.  Daily I use a site that uses Flash for a game. In   the past I have had sites to clear.   Since I can't clear things wonder if my performance/speed is being affected?  Sometimes think I'm slowing down and sometimes crash in the Facebook game.

Why don't I have websites to clear now?  Appreciate help.  Thank you,