On the opposite side of the screen from these menu items, where I have the menu bar icons and the date and so forth, all of those work. When this happens, I cannot click on any of the Finder menu options at the top of my screen (The apple logo, the application menu, File, Edit, View, etc).
This seems to happen particularly after the clock has been covered up for an extended period of time. What I don't love is the fact that it will, at times, cause my Finder menu to become unresponsive. I love that I can customize it to some extent.
I love that I can size the clock face to any size I want. I love that it can be placed on the desktop and be unobtrusive.