You're missing libraries. A lot of them as I had the same problem and just fixed it on mine (beta 08).

Application manager -> Tools (menu button) -> Application catalog
New: For name, your choice. Web address http://eko.one.pl/maemo/
Distribution: mistral
Components: user
disabled (clear box) tap OK.

Repeat above steps for another repo.
Name - your choice, web addy http://repository.maemo.org/
distribution: bora
Components: "free non-free" (everything but the quotes with a space or it wont work). again no checkbox in disabled (obviously). tap ok.

After you clear all the prompts it will ask you if you want to update the new listing. Click yes and after it updates, tap on Browse installable applications and in the alphabet soup listing you should see your missing libraries there, waiting for you to install them. After you install them, give kagu, ukmp, etc another go and they all should work now.

That took me about 2-3 hours to figure out.