[CentOS] Eclipse CDT not working properly

Hello again,

Another problem with my new CentOS 6 installation:
The C/C++ support in Eclipse seems to be partial or missing - even 
though eclipse-cdt is installed. Eclipse starts all right, and I get a 
C/C++ perspective, but:

 1. If I open a C++ file, it's sent to an external editor.
 2. C or C++ is not mentioned in Preferences.
 3. I can't find a reference to CDT under Help->About Eclipse
    Platform->Installation Details

I've tried reinstalling all the eclipse packages, and also resetting the 
workspace as well as the settings in ~/.eclipse, but it made no 
difference. On startup I get the following messages:
CompilerOracle: exclude 
org/eclipse/core/internal/dtree/DataTreeNode.forwardDeltaWith
CompilerOracle: exclude 
org/eclipse/jdt/internal/compiler/lookup/ParameterizedMethodBinding.<init>
CompilerOracle: exclude 
org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPTemplates.instantiateTemplate
CompilerOracle: exclude 
org/eclipse/cdt/internal/core/pdom/dom/cpp/PDOMCPPLinkage.addBinding
CompilerOracle: exclude 
org/python/pydev/editor/codecompletion/revisited/PythonPathHelper.isValidSourceFile
CompilerOracle: exclude 
org/python/pydev/ui/filetypes/FileTypesPreferencesPage.getDottedValidSourceFiles

Has anyone else seen this? Any idea what's wrong? Is anyone here are 
using Eclipse for C++ development, anyway?

Eclipse platform version is 3.6.1-6.13.el6.x86_64, CDT 
7.0.1-4.el6.x86_64 (those are the latest from updates.)

- Toralf


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