I just upgraded some new kde packages for potato and /usr/bin/kcmshell doesn't work.
bash$ /usr/bin/kcmshell
kcmshell: error in loading shared libraries: kcmshell.so: cannot open shared
object file: No such file or directory
bash$ ldd /usr/bin/kcmshell
kcmshell.so => not found
libksycoca.so.3 => /usr/lib/libksycoca.so.3 (0x4001c000)
libkio.so.3 => /usr/lib/libkio.so.3 (0x400a7000)
...
Isn't it supposed to be in kdebase-libs?
'dpkg -L kdebase-libs' doesn't show it.

