Problem 1:
The articles in the categories are not displayed ordered by date, that is latest first, as configured in the module settings, and in some cases no articles are displayed at all, although there are more than 100 articles published in that category.
Problem 2:
Apart from that, I still have the problem that although I have listed sections and not categories in the news2 module, only 3 random categories are displayed per section. When trying to change those in the user settings I get the following error message:
Could not found (sic!) the form settings for this module. Please try to check again.