тема на орге: http://www.vbulletin.org/forum/showthread.php?t=275114

vB Version: 4.1.x

LATEST VERSION 1.5
change log

Optimization of the code
No more one column with 50% width - fixed completely
The hack works now with categories which act as forum
Gap issue fixed!


Description:
This mod splits the categories list into two columns.

Compatibility:
Works with all vBulletin 4.1.X versions,
may work with 4.x, not checked

Installations:
you don't have to change anything in the templates,
just upload the plugin and that's all.

- Import XML file (as product): AdminCP > Plugins & Products > Manage Products > [Add/Import Product]

Settings:
Settings -> Options -> Two columns of categories

- Enable/Disable the hack
- Set the margin between categories
- Disable the hack in specific styles
Screenshot:


product-rellect_2_column[1.5].xml

скрин с орга:

Можно ли такое реализовать для версии 3.8.7??

весь код есть в продукте в первом сообщении, небольшие познания пхп и шаблонов => готовый хак для тройки