Plasma problem (QPainter?)

Hi.
I’m using KDE 4.2 (release 97) on openSUSE11.1. Regularly my bottom tool bar freezing. When I start plasma again from console all works fine (3-6 hours) and then again freezing. Each time i got loop information:
QPainter::begin: Paint device returned engine == 0, type: 3
QPainter::setCompositionMode: Painter not active
QPainter::end: Painter not active, aborted
QPainter::begin: Paint device returned engine == 0, type: 3
QPainter::setCompositionMode: Painter not active
QPainter::end: Painter not active, aborted
QPainter::begin: Paint device returned engine == 0, type: 3
QPainter::setCompositionMode: Painter not active
QPainter::end: Painter not active, aborted

Any help?

Greetings.

Are you update your Qt packages from this repo:
http://download.opensuse.org/repositories/KDE:/Qt/openSUSE_11.1/?

Yes, I have:
qt3 - ver. 3.3.8b-87.13
libqt4 ver. 4.4.3-4.8.2
so it’s look like new versions.

Hello,

I have the same problem but I use qt4.5.0. I use nouveau git for my nvidia vga. Which vga adapter and driver do you use?
Do you use multimonitor setup?
Do you use rotated screens?
Do you use randr1.2?

BTW, I cannot reproduce this using nv driver

I believe that I have the same problem with QT 4.5.3. ‘qtconfig’ gives these errors when I try to change sth (fonts, font size, etc.).