Android install & discover problems

[tchill]

Any special tricks/gotchas for building an OpenId app for Android
using OpenId4Java? Only reference to this combo is an earlier one
posted when the Apache HTTP libs used by OpenId4Java were switched to
be compatible with the built-in Android libs.

I have a simple app that compiles fine in Eclipse & command line, but
when I install the apk, I get a bunch of debug messages indicating
there are codec classes with earlier definitions.
E.g.:
D/dalvikvm(11571): DexOpt: 'Lorg/apache/commons/codec/Decoder;' has an
earlier definition; blocking out

NOTE: I'm using the xerces, guice, nekohtml, commons-codec that came
with the openid4java-0.9.6.jar

These are followed by debug messages that those classes aren't being
verified, and some info messages sprinkled about ambiguous other codec
classes.

Starting the app gives another bunch of messages:

I/dalvikvm(11582): Failed resolving Lorg/apache/xerces/dom/NodeImpl;
interface 1983 'Lorg/w3c/dom/events/EventTarget;'
W/dalvikvm(11582): Link of class 'Lorg/apache/xerces/dom/NodeImpl;'
failed

The main activity comes up fine, but when I attempt to call
consumerManager.discover with an id for yahoo or google, I get an
IllegalArgumentException:

I/Discovery(11582): Starting discovery on URL identifier:
https://www.google.com/accounts/o8/id
W/System.err(11582): java.lang.IllegalArgumentException:
http://java.sun.com/xml/jaxp/properties/schemaLanguage
W/System.err(11582): at
org.apache.harmony.xml.parsers.DocumentBuilderFactoryImpl.setAttribute(DocumentBuilderFactoryImpl.java:
86)
W/System.err(11582): at
org.openid4java.discovery.xrds.XrdsParserImpl.parseXmlInput(XrdsParserImpl.java:
168)
W/System.err(11582): at
org.openid4java.discovery.xrds.XrdsParserImpl.parseXrds(XrdsParserImpl.java:
50)
W/System.err(11582): at
org.openid4java.discovery.yadis.YadisResolver.retrieveXrdsDocument(YadisResolver.java:
301)
W/System.err(11582): at
org.openid4java.discovery.yadis.YadisResolver.discover(YadisResolver.java:
256)
W/System.err(11582): at
org.openid4java.discovery.yadis.YadisResolver.discover(YadisResolver.java:
232)
W/System.err(11582): at
org.openid4java.discovery.yadis.YadisResolver.discover(YadisResolver.java:
166)
W/System.err(11582): at
org.openid4java.discovery.Discovery.discover(Discovery.java:147)
W/System.err(11582): at
org.openid4java.discovery.Discovery.discover(Discovery.java:129)
W/System.err(11582): at
org.openid4java.consumer.ConsumerManager.discover(ConsumerManager.java:
542)

Suggestions? Insights?