I've just set up my first Android development environment consisting of

• Eclipse 3.5
• Mac OSX 10.5
• Android SDK for x86 macs
• ADT Eclipse plugin 0.9.6

I've set set $PATH to my SDK/tools directory (which shouldn't matter if I only use Eclipse right?) and started Eclipse, but when I try to set the path to the SDK in Eclipse, i get the error "parseSdkContent failed". The stack trace of from the thrown exception is

java.lang.IllegalArgumentException: http://www.w3.org/2001/XMLSchema
at javax.xml.validation.SchemaFactory.newInstance(SchemaFactory.java:181)
at com.android.ide.eclipse.adt.internal.sdk.LayoutDevicesXsd.getValidator(Unknown Source)
at com.android.ide.eclipse.adt.internal.sdk.LayoutDeviceManager.parseLayoutDevices(Unknown Source)
at com.android.ide.eclipse.adt.internal.sdk.LayoutDeviceManager.loadDefaultLayoutDevices(Unknown Source)
at com.android.ide.eclipse.adt.internal.sdk.LayoutDeviceManager.loadDefaultAndUserDevices(Unknown Source)
at com.android.ide.eclipse.adt.internal.sdk.Sdk.<init>(Unknown Source)
at com.android.ide.eclipse.adt.internal.sdk.Sdk.loadSdk(Unknown Source)
at com.android.ide.eclipse.adt.AdtPlugin$13.run(Unknown Source)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

I can't see that I've missed anything in the setup process, according to the instructions it should basically just work out of the box. Any ideas as to why this might fail?