I updated to new version, but still have problems using more than one group for a category!
Group Reg Users
Now I assign the users to their groups and the groups to categories.
As long as I add only one group (e.g. Family) to category SPECIAL, articles are shown to group family.
When adding another group (e.g. Friends) to SPECIAL, none of the groups (neither family nor friends) is able to see the article! Only admin can see it.
A bug or admins fault?