Greenweb

Only use this plugin if you already have Ozh’s Admin Drop Down Menu installed.
Ozh’s Admin Drop Down Menu is a great ui option 
But it should be an option that does not effect every author, editor and admin on a website
If you like this plug-in please give it a five star rating, blog about it, Tweet about it and tell your WordPress friends.

Hide Option for Ozh's Admin Drop Down Menu

Gives your users the ability to turn off Ozh's Admin Drop Down Menu in their profile

sara cannon

Twentyten is the default theme for WP 3.0 and has beautiful CSS for its menu system. However, if you wanted your menu to drop down in IE6, this does not occur. Use this plugin to make that happen using the jQuery built into WordPress. Many people don’t care about browser compatibility back to IE6, so this plugin is for the few that happen to.

Twenty Ten IE6 Menus

Use this plugin to make the main menu in the twentyten theme drop down in IE6. Perfect for Child Themes.

Hide Option for Ozh's Admin Drop Down Menu vs Twenty Ten IE6 Menus