Comment # 3 on bug 1122723 from Fabian Vogt

> If in / I run Properties on /D: I sometimes get the device usage figures from /C: (10.5 and 24.6); when I then open /D:, it only shows me two or three text files. If Properties starts with calculating, it gives me the real device usage, and opening /D: then indeed gives me also the real content. 

That's interesting. Can you do that again with dolphin started as
"KDE_FORK_SLAVES=1 QT_LOGGING_RULES=*.debug=true dolphin"?

Is there anything useful in the system journal?