How about just annoying? There are (IMO) too many "are you sure" messages. For example, drop a case structure on a block diagram and put a random function in each of the cases. Right click on it and select "Remove Case Structure." We're lovingly rewarded with this warning:
This happens with any multi-frame stacked structure (event, diagram disable, etc.) that has content in the other frames. I understand NI is looking out for inexperienced programmers, but we understand the behavior and consequences of removing a stacked structure. We don't need to be reminded every single time. I can safely say in the years I've been using Labview I have never, not one single time, changed my mind about removing a structure because of the dialog box.