Step to reproduce create file `~/.cache/plasma-svgelements-default_v0.9.7` expect the whole desktop to hang including but not limited to krunner, kwin, plasmashell. In my case the file was present very likely because a abnormal exit. Not sure if the content of the file is important but the freeze disappears after removing the file. Reproducible: Always
*** This bug has been marked as a duplicate of bug 345901 ***