I would like to repeat this error but I preferred, horrified, to eliminate the keyboard (PS/2) in question. It had a faulty cable as it seams. Now instead, that caused a very troublesome software error. Premise, I had deactivated the confirmation dialog after right click and “put to trash”. Now during this hardware trouble with the keyboard, the keys would lock, however it would still be possible to move the mouse and work with the system.
Whatever I would have opened with dolphin (or within the kmenue “open file” resulted in an automatic deletion of the file. I lost some mpg movies before I got aware what happened. Nothing really important but still, I am understanding now differently the necessity of the “delete confirmation dialog”. Have now a new Cherry keyboard (former was MS tech) with usb interface. Runs flawlessly and the error disappeared. I post it anyway out of curiosity, to know if someone else might have experienced this error, in other or similar circumstances. I think it was purely hardware related. Still…shocking.
# uname -a
Linux linux-5m9f 3.1.0-1.2-desktop #1 SMP PREEMPT Thu Nov 3 14:45:45 UTC 2011 (187dde0) x86_64 x86_64 x86_64 GNU/Linux
on a openSUSE 12.1, KDE version 4.72 and dolphin version 1.7.