I have found a couple issues with this component:

1) Can't arrange categories, when I drag a category it automatically dumps it into another category.

2) Joomla Menus tend not to work when on the Categories section in the backend.

3) My menu effects on my front-end no longer work when viewing the componenet, however this does not happen when the polls component.

4) Parameters tab does not work in back-end

Just some issues I have encountered so far. However this component looks great and is really top-notch :)