UI misbehaviour

When defragller window is small, it's impossible to see some information or control elements. E.g. attached picture shows that Device Map is not fully visible and Edit properties button can't be seen.

post-24738-039024800 1289458825_thumb.png

The same applies to other pages.

I suggest to set minimal possible window size when a user can see all needed information and controls and/or make smarter resizing.