I tested for some while with the free 'nv'-driver and the bug does not appear. But according to the kde bug-report at least one person is using an intel driver. And I talked to Lonni J Friedman from nvidia-linux-support and he says it is not a nvidia-driver-bug.
I tested for some while with the free 'nv'-driver and the bug does not appear. But according to the kde bug-report at least one person is using an intel driver. And I talked to Lonni J Friedman from nvidia- linux-support and he says it is not a nvidia-driver-bug.
So there must be a problem in kde.