Comment 7 for bug 227359

To add some info, I am using the kubuntu desktop and experienced the problems under kde.

I think I have found the cause of the reported problem now - at least with my setup.

It is some strange interaction with some kde usability features and some bugs in related systems. There is some usabiltity feature calles 'sticky keys' (IIRC), thus if you press a special key some seconds, this 'feature' get automagically enabled.

But sure enough, even with sticky keys, you should not get key press event duplications. Even worse, at some stage with testing under sticky keys, the X server terminated itself (str+alt+backspace was _not_ accidently pressed).

The kde 3 usability setup dialog is very strange (i.e. has not a high usability (sic!)), thus I thought the usability features were disabled, but they weren't 100%. The consequence was, that sticky keys were enabled, but no optical notification was shown on activation.

I can post some screenshots, that show the configuration dialog in that usability-feature-pseudo-activated-state.

Thus, after making sure, that sticky keys are completely de-activated in this strange configuration dialog the problem was fixed.