Thank you Mr. Striegler for replying so quickly. I don't know if I already reported the bug here. Surely it was at www.linux-club.de. My problem in detail: Operating system: openSUSE Leap 15.5 KDE Plasma version: 5.24.4 KDE Framework Version: 5.100.0 Qt version: 5.15.2 Kernel version: 6.1.7-lp153.3.g2ebd33f-default (64-bit) GraphicsPlatform: X11 Processors: 8 ������ Intel������ Core��������� i7-4710HQ CPU @ 2.50GHz Memory: 15.6 GiB of RAM Graphics Processor: Mesa Intel������ HD Graphics 4600 It's all about memory: that 15.6 GIB of Ram may not be enough and the laptop freezes. No mouse, no keyboard work anymore. With LibreOffice Base I do the sales tax calculation for our two offices. I also listen to the radio via VLC. Both are enough for the RAM to run full, which is of course not so great when calculating sales tax. What I also noticed is that /usb/lib/mozillahelper is currently displayed 12 times in the system monitor. Kind regards Uwe Luedecke