WordPress version 2.6.2 seems to have a problem with creating identical categories. It does not allow you to create a same name subcategories even with different parent.

For example you have category structure like

WordPress Theme
- 2 Column
- 3 column
- Left sidebar
- Right sidebar

Drupal
- 2 column
- 3 column
…
…

You wont be able to identical subcategories even it belongs to different parent category. I tried overcome this problem with different category slugs but it never worked for me.

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