[Ozh' Admin Drop Down Menu]: Not showing dropdowns

Hi,

I have upgraded one of my instances from 3.0 to 3.0.1. Everything works fine, except Ozh’ Admin Drop Down Menu: Instead of dropdowns, I get a long vertical list of the menu, that reads as follows:

Dashboard
Dashboard
o Dashboard
o Updates 0
*

*

Posts
Posts
o Posts
o Add New
o Categories
o Post Tags
*

Media
Media
o Library
o Add New
*

Links
Links
o Links
o Add New
o Link Categories
*

Pages
Pages
o Pages
o Add New
*

Comments 0
*

*

Appearance
Appearance
o Themes
o Widgets
o Menus
o Editor
*

Plugins 0
Plugins 0
o Plugins
o Add New
o Editor
*

Users
Users
o Users
o Add New
o Your Profile
*

Tools
Tools
o Tools
o Import
o Export
*

Settings
Settings
o General
o Writing
o Reading
o Discussion
o Media
o Privacy
o Permalinks
o Admin Menu
o DDFM-Main
o DDFM1
o Delete-Revision
*

*

Dashboard
o Dashboard
o Dashboard
o Updates 0
*

Posts
o Posts
o Posts
o Add New
o Categories
o Post Tags
*

Media
o Media
o Library
o Add New
*

Links
o Links
o Links
o Add New
o Link Categories
*

Pages
o Pages
o Pages
o Add New
*

Comments 0
*

Appearance
o Appearance
o Themes
o Widgets
o Menus
o Editor
*

Plugins 0
o Plugins 0
o Plugins
o Add New
o Editor
*

Users
o Users
o Users
o Add New
o Your Profile
*

Tools
o Tools
o Tools
o Import
o Export
*

Settings
o Settings
o General
o Writing
o Reading
o Discussion
o Media
o Privacy
o Permalinks
o Admin Menu

—

Anyone any idea how to fix this?

Thanks
Mercator