Hi everyone,
I suppose my problem is connected with a graphic card driver.
Description:
There are some applications, system applets which doesn’t repaint their windows after clicking on a maximize button. Here is an example:
Step 1 – I have just launched the applet for discs management; window isn’t maximized

Step 2 – It is situation after clicking on the maximize button; additional screen surface isn’t refreshed or repainted – why Mr Anderson? Why? 

Step 3 – If I move ( a little bit ) horizontal bar into the up or down direction the window repaints.

Aim:
I want to solve this issue. Does anybody know what it’s wrong?
Maybe the clue of this thing is to change some options in power management?
Some info about my configuration:
Windows 7 Home Premium 64-bit
Asus Radeon HD 6850 DirectCU
Intel Corei5-2500K
8GB DDR3
2 x discs in RAID 0
I have downloaded all Windows 7 updates and my Radeon driver ( 8.911.0.0, AMD Catalyst 11.11) is up to date.