Enabling Admin module deleted my existing primary menu items

Don't know what else to add :)

Here are my enabled module versions

Admin 6.x-2.0-alpha5 6.x-2.0-alpha5 Up to date
Administration menu 6.x-1.5 6.x-1.5 Up to date
Advanced help 6.x-1.2 6.x-1.2 Up to date
Drupal 6.15 6.15 Up to date
Context 6.x-3.0-alpha2 6.x-3.0-alpha2 Up to date
Chaos tool suite 6.x-1.2 6.x-1.2 Up to date
Devel 6.x-1.18 6.x-1.18 Up to date
Features 6.x-1.0-beta5 6.x-1.0-beta5 Up to date
jQuery UI 6.x-1.3 6.x-1.3 Up to date
Organic groups 6.x-2.0 6.x-2.0 Up to date
Persistent URL 6.x-1.0-beta7 6.x-1.0-beta7 Up to date
Spaces 6.x-3.0-alpha2 6.x-3.0-alpha2 Up to date
Strongarm 6.x-2.0-beta3 6.x-2.0-beta3 Up to date
Teleport 6.x-1.3 6.x-1.3 Up to date
Views 6.x-2.8 6.x-2.8 Up to date