Bug 128825 [navigation] Long pause and exceptions pressing Ctrl+O
Build: 3.2 M5 While waiting for a long CVS checkout, I was browsing through some Java code. I hit Ctrl+O to open the outline, typed some characters ("get"), and then hit Ctrl+O again to show inherited members. There was a pause, and then the outline view went blank. After that, toggling Ctrl+O or changing the filter text in the outline had no effect - the view was just blank. After closing the outline popup completely and reopening, it was behaving as expected. While doing this, a large number of OperationCanceledExceptions appeared in my log file (log attached).
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/JavaOutlineInformationControl.java
setDescription(TextMessages.JavaOutlineInformationControl_SortByDefiningTypeAction_description);
			setToolTipText(TextMessages.JavaOutlineInformationControl_SortByDefiningTypeAction_tooltip);
			JavaPluginImages.setLocalImageDescriptors(this, "definingtype_sort_co.gif"); 
			fOutlineViewer= outlineViewer;
			PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.SORT_BY_DEFINING_TYPE_ACTION);
			boolean state= getDialogSettings().getBoolean(STORE_SORT_BY_DEFINING_TYPE_CHECKED);
			setChecked(state);
			fInnerLabelProvider.setShowDefiningType(state);
		}
		/*
		 * @see Action#actionPerformed
		 */
		public void run() {
			BusyIndicator.showWhile(fOutlineViewer.getControl().getDisplay(), new Runnable() {
				public void run() {
					fInnerLabelProvider.setShowDefiningType(isChecked());
					getDialogSettings().put(STORE_SORT_BY_DEFINING_TYPE_CHECKED, isChecked());
					fOutlineViewer.refresh(true);
					
					Object selectedElement= getSelectedElement();
					if (selectedElement != null)
						fOutlineViewer.reveal(selectedElement);
				}
			});
		}
	}
	/**
	 * Creates a new Java outline information control.
	 *
	 * @param parent