After having a hell with freezing KPA and problems installing FW 1.05 and other issues I THINK I got the solution.
Earlier I tried the system reset and also MIDI reset but tonight I dared to try the ERASE THE INTERNAL FLASH MEMORY in the KPA Hints doc.
After that I installed the FW 1.05 and seem to have no problems.
Even the BUZZING noise is almost totally gone.
Now I will load my backup of all rigs and presets and maybe my luck ends there if there are corrupt files....
So far
Mike