FULL PRODUCT VERSION :
java version "1.6.0_11"
Java(TM) SE Runtime Environment (build 1.6.0_11-b03)
Java HotSpot(TM) Client VM (build 11.0-b16, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
openSUSE 11.1 i586

EXTRA RELEVANT SYSTEM CONFIGURATION :
GTK theme Gilouche (it is default one for GNOME desktop in openSUSE 11.1)

A DESCRIPTION OF THE PROBLEM :
  Toolbar in Java applications with GTK L&F is shown incorrectly due to wrong processing of the following property in gtkrc theme file: GtkToolbar::shadow_type = GTK_SHADOW_NONE
As a results there is an ugly one pixel wide horizontal line as a separator between menu bar and toolbar which is not presented in native gtk applications and it should not be shown in Java application as well


REPRODUCIBILITY :
This bug can be reproduced always.