In beginning time I installed Unetbootin, it is fine to add my local Linux ISO then burn it into USB. But after I install KDE, I don't know why Unetbootin face become Qt (GTK before) and needs too long time for loading KDE File Chooser Dialog. And Unetbootin becomes greyish (like usual crash on Ubuntu) soon after I clicked add ISO button.

Problem: I have ran Unetbootin via $ sudo unetbootin and the result was always like these:

Error: "/tmp/ksocket-master" is owned by uid 1000 instead of uid 0.
Error: "/tmp/kde-master" is owned by uid 1000 instead of uid 0.

Long time to open Unetbootin, and it looks like crashed, makes me difficult to burn ISO quickly like before.