Mousedown is unreliable, KDE 4.4

When dragging, or holding the mouse down in general the mouse tends to ‘let go’. In some situations the mouse grabs through the window. For example, I may be scrolling in okular and suddenly find myself dragging an item in the browser below. The behavior is independent of the application (it may fall through Dolphin onto Okular just as easily).

Highlighting text is the worst performing… It usually takes two to three goes to get the right range.

Is this a known issue? Known solution?

OS Information
OS: Linux 2.6.34.7-0.5-desktop x86_64
Current user:
System: openSUSE 11.3 (x86_64)
KDE: 4.5.3 (KDE 4.5.3) “release 8”
Display Info
Vendor: nVidia Corporation
Model: GeForce GTX 275
2D driver: nvidia
3D driver: NVIDIA 260.19.12
CPU Information
Processor (CPU): Intel(R) Core™ i7 CPU 920 @ 2.67GHz
Speed: 2,673.51 MHz
Cores: 4
Memory Information
Total memory (RAM): 11.8 GiB
Free memory: 8.3 GiB (+ 2.1 GiB Caches)
Free swap: 36.0 GiB

Seen this happen before, but it also happened on another system and it was a broken mouse button sensor.

No idea about this one, never happened to me and I’ve tried all KDE4 releases.

I’m trying a new mouse now. Perhaps its an issue with the specific USB mouse.

This is what threw me, if it werent for that I would have just assumed it was the mouse.

According to this forum it’s common for mouse buttons to wear out over time.
But I don’t think clicking through the windows can be a hardware problem. Might be related to plasma/xorg, you could try using a different mouse driver.

Thank you. Clicking through seems to have stopped with another mouse. Strange