Qt 4.7: Rendering / refreshing / repainting error becouse of mouse

[Astronomy]

Hello,

I've ported my App to Qt 4.7.0 (64bit), Qt Creator 2.0.1
if i do move the mouse over my Qt- App, it paints everything black? I never had this in any other updates of Qt ?
The buttons are getting a black shape around if i hoover them.
Some widgets are going to be totally black...
see pic

What can i do about this?

thank you,
Astronomy

[Astronomy]

I' ve tested this also on my older computer with 32bit ubuntu 10.04 Linux- and Qt Creator 2.0.1 & Qt 4.7.0 (32 bit) Revision b06f25f265, build at: Sept. 20. 2010. 13:29:58 There is no repainting problem, which i'd described above..

The repainting problem only occurs on:
Qt Creator 2.0.1 & Qt 4.7.0 (64 bit) Revision b06f25f265, build at: Sept. 20. 2010. 13:27:21 and
ubuntu Linux 9.04 - AMD 64. (so far.. )

regards Astronomy

[Astronomy]

Hi,
as i was hoping, the problem disappeared with the update:

qt-sdk-linux-x86_64-opensource-2010.05.1.bin

regards Astronomy