It's a problem for me because I keep hitting that button when I don't want to. For example, I accidentally click it when I want to:

1. close a program


2. minimise a program


3. select a file on the desktop which is close to it

Its placement is quiet frustrating. About 2 years of using it, and I still keep clicking it accidentally when I don't want to...

For example, Microsoft Windows moved the show desktop button to the other side so people wouldn't accidentally click the start button when trying to click the show desktop button. It's a similar situation.