Problemas al instalar herramientas de desarrollo de Android en Eclipse 3.7

Hola Tengo problemas para añadir ADT a Eclipse 3.7 He añadido el sitio al administrador de software. Marque "Herramientas de desarrollo" y haga clic en Siguiente. Consigo el mensaje de error siguiente

Cannot complete the install because of a conflicting dependency. Software being installed: Android Development Tools 12.0.0.v201106281929-138431 (com.android.ide.eclipse.adt.feature.group 12.0.0.v201106281929-138431) Software currently installed: Shared profile 1.0.0.1317160468326 (SharedProfile_PlatformProfile 1.0.0.1317160468326) Only one of the following can be installed at once: International Components for Unicode for Java (ICU4J) 4.4.2.v20110208 (com.ibm.icu 4.4.2.v20110208) International Components for Unicode for Java (ICU4J) 4.0.1.v20090822 (com.ibm.icu 4.0.1.v20090822) International Components for Unicode for Java (ICU4J) 4.0.1.v20090415 (com.ibm.icu 4.0.1.v20090415) Cannot satisfy dependency: From: Shared profile 1.0.0.1317160468326 (SharedProfile_PlatformProfile 1.0.0.1317160468326) To: com.ibm.icu [4.4.2.v20110208] Cannot satisfy dependency: From: Android Development Tools 12.0.0.v201106281929-138431 (com.android.ide.eclipse.adt.feature.group 12.0.0.v201106281929-138431) To: org.eclipse.wst.sse.ui 0.0.0 Cannot satisfy dependency: From: Java EMF Model Utilities 2.0.200.v200905140200 (org.eclipse.jem.util 2.0.200.v200905140200) To: bundle com.ibm.icu [3.8.1.1,4.1.0) Cannot satisfy dependency: From: Java EMF Model Utilities 2.0.201.v201001252130 (org.eclipse.jem.util 2.0.201.v201001252130) To: bundle com.ibm.icu [3.8.1.1,4.1.0) Cannot satisfy dependency: From: Common Frameworks 1.1.300.v200904160730 (org.eclipse.wst.common.frameworks 1.1.300.v200904160730) To: bundle org.eclipse.jem.util [2.0.100,3.0.0) Cannot satisfy dependency: From: Structured Source Editor 1.1.101.v200908261807 (org.eclipse.wst.sse.ui 1.1.101.v200908261807) To: bundle org.eclipse.wst.validation [1.2.0,1.3.0) Cannot satisfy dependency: From: Structured Source Editor 1.1.102.v200910200227 (org.eclipse.wst.sse.ui 1.1.102.v200910200227) To: bundle org.eclipse.wst.validation [1.2.0,1.3.0) Cannot satisfy dependency: From: Validation Framework 1.2.102.v200905201610 (org.eclipse.wst.validation 1.2.102.v200905201610) To: bundle org.eclipse.wst.common.frameworks [1.1.200,2.0.0) Cannot satisfy dependency: From: Validation Framework 1.2.104.v200911120201 (org.eclipse.wst.validation 1.2.104.v200911120201) To: bundle org.eclipse.wst.common.frameworks [1.1.200,2.0.0) 

cualquier ayuda será apreciada.

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Estoy ejecutando: Eclipse 3.7 64-bit Ubuntu 11.10 64-bit

 sudo -E eclipse