If a site member goes to their privacy groups and adds someone who is already in the group, they get a big ugly blank page that just says "database query error." Then they email me saying, "omg the site just broke!" In reality the database error is that the member they are trying to add has already been added, which should return not a big ugly error message to my members, but rather a lovely polite, "This person is already in your privacy group. Would you like to add another member?"
Or even better, don't have people who are already in a privacy group as options to add!
There are other areas of the site where this happens, but I evidently haven't kept notes on it... I have minions running all over the site trying stuff out to reproduce the issue, I'll let you know where else it pops up.
