I was doing nothing, the bug report window appear suddenly while the screen saver is running. Reproducible: Sometimes Steps to Reproduce: 1. just leave the computer unattended 2. 3.
Created attachment 101223 [details] automatic plasma crash file.
It did crash, it just restarted immediately afterwards. Thanks for reporting. Should be fixed in newer releases. *** This bug has been marked as a duplicate of bug 340267 ***