Be honest—do you really need somebody else to tell you that this message box below doesn't make any sense? You can find problems like this. Your QA testers are a valuable resource, so you should save them for problems that are truly difficult to find.
Most of the remaining chapters in this part of the book, "Testing and QA," present different user interface issues that need your attention during the development and testing process. You should make an effort to address as many of them as you can. Remember that making quality software is your responsibility.