When I try to install the MorphOS 3.18 SDK, the extraction process always stops after a random time. The system stays responsive for a while, e.g. I can open and close other programs. But when I try to close the SDK installer, the title bar blinks red and the system is now alsmost unresponsive. The mouse still works and I can't close other windows any more. After a while, the clocks stops too. So the systems dies a slow death so tgo speak... The same phenomena with the red can happen when the Wayfarer browser crashes. I try to close the browser, the title bar blinks red, the system dies...

Whats is happening here? Any ideas how to prevent these issues?