Version:            (using KDE 4.0.5)
Installed from:    Compiled From Sources
Compiler:          GCC 4.1.2 Target: x86_64-unknown-linux-gnu Configured with: ../gcc-4.1.2/configure --prefix=/usr --libexecdir=/usr/lib --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --enable-languages=c,c++ --disable-multilib Thread model: posix
OS:                Linux

Sometimes dolphin shows wrong information about file size both in status bar and in file Properties window. I've noticed it for changing files, for example, files captured with mplayer of some other growing files. I managed to show the right information again only by restarting KDE. To reproduce I have the only stable way (I hope it's proper, cause it's with mplayer use):
1. Open some directory in Dolphin.
1. Start capturing sound from some video file with mplayer in the directory opened with Dolphin:
mplayer foo.avi -vc dummy -vo null -ao pcm:file=bar.wav
2. After finish, select the file bar.wav to see the size in status bar or click Properties to see it in the window. File size should be wrong (very small, about 5% of real size).
3. Measure file size in console with du. It will show the real size.