Disable the update centers.

Index: netbeans-7.0.1+dfsg1/updatecenters/src/org/netbeans/modules/updatecenters/resources/mf-layer.xml
===================================================================
--- netbeans-7.0.1+dfsg1.orig/updatecenters/src/org/netbeans/modules/updatecenters/resources/mf-layer.xml	2011-07-28 20:47:06.000000000 +0100
+++ netbeans-7.0.1+dfsg1/updatecenters/src/org/netbeans/modules/updatecenters/resources/mf-layer.xml	2011-08-02 23:44:50.923331325 +0100
@@ -55,7 +55,7 @@
 		<attr name="iconBase" stringvalue="org/netbeans/modules/updatecenters/resources/updateAction.gif"/>
 		<attr name="url" bundlevalue="org.netbeans.modules.updatecenters.resources.Bundle#URL_Distribution"/>
 		<attr name="category" stringvalue="STANDARD"/>
-		<attr name="enabled" boolvalue="true"/>
+		<attr name="enabled" boolvalue="false"/>
 		<attr name="instanceOf" stringvalue="org.netbeans.spi.autoupdate.UpdateProvider"/>
 		<attr name="instanceCreate" methodvalue="org.netbeans.modules.autoupdate.updateprovider.AutoupdateCatalogFactory.createUpdateProvider"/>
 	</file>
@@ -64,7 +64,7 @@
 		<attr name="iconBase" stringvalue="org/netbeans/modules/updatecenters/resources/updateAction.gif"/>
 		<attr name="url" bundlevalue="org.netbeans.modules.updatecenters.resources.Bundle#URL_Certified"/>
 		<attr name="category" stringvalue="STANDARD"/>
-		<attr name="enabled" boolvalue="true"/>
+		<attr name="enabled" boolvalue="false"/>
 		<attr name="instanceOf" stringvalue="org.netbeans.spi.autoupdate.UpdateProvider"/>
 		<attr name="instanceCreate" methodvalue="org.netbeans.modules.autoupdate.updateprovider.AutoupdateCatalogFactory.createUpdateProvider"/>
 	</file>
@@ -73,7 +73,7 @@
 		<attr name="iconBase" stringvalue="org/netbeans/modules/updatecenters/resources/updateAction.gif"/>
 		<attr name="url" bundlevalue="org.netbeans.modules.updatecenters.resources.Bundle#URL_PluginPortal"/>
 		<attr name="category" stringvalue="COMMUNITY"/>
-		<attr name="enabled" boolvalue="true"/>
+		<attr name="enabled" boolvalue="false"/>
 		<attr name="instanceOf" stringvalue="org.netbeans.spi.autoupdate.UpdateProvider"/>
 		<attr name="instanceCreate" methodvalue="org.netbeans.modules.autoupdate.updateprovider.AutoupdateCatalogFactory.createUpdateProvider"/>
 	</file>
