In AS5 GA, commons-httpclient was included in commons/lib. However, httpclient depends on commons-codec which was not included. So we need to either add commons-codec or remove httpclient.

From this discussion, it appears that we should remove httpclient:
http://lists.jboss.org/pipermail/jboss-development/2009-January/013397.html

The current problem is that the RichFaces demo has:
<jboss-web>
<class-loading>
<loader-repository>
org.richfaces.samples.richfaces-demo:loader=richfaces-demo-jee5.war
<loader-repository-config>java2ParentDelegation=true</loader-repository-config>
</loader-repository>
</class-loading>
</jboss-web>

When you run the demo with JSFUnit, the WAR includes commons-httpclient and commons-codec in WEB-INF/lib. Since parent delegation is true it will use commons-httpclient from commons/lib and then fail because it can't find commons-codec.