Version:            (using KDE 4.1.0)
Installed from:    Compiled From Sources

The following paragraph in the dolphin  handbook (entry 32):

To switch from location view to breadcrumbs, simply double click in the 
breadcrumb area. To change back, click the newly appeared yellow arrow to 
the right of the location bar.

Should be replaced by (please correct my poor english):

To switch from breadcrumbs to location view, simply click to the right of the breadcrumbs area. To change back, click the newly appeared yellow arrow to 
the right of the location bar.