This sounds like a GTK problem. What's the output of "which gtk-update-icon-cache", and the output from running "gtk-update-icon-cache -f /usr/share/icons/hicolor" as root?
On Thu, 2007-09-27 at 16:32 +0200, Vincent Lönngren wrote: > Package: gimp-data > Version: 2.4.0~rc3-1 > Severity: normal > > There's an installation problem. I don't know what causes it or what to > do about it.