As you may know, I work in technical support. I have previously written some posts targeting unhelpful practices by those calling in. You can do a search for "tech support" using the bar at the top of my blog.
I have an additional update.
Don't ask if your problem happens a lot.
Don't ask if everyone has to call in about this.
When you ask these questions you are implying we send out crappy software that we know a majority of our customers are going to have to call in about. These types of questions are drenched in sarcasm, so don't start down that road.