test500Compatibility test was just added to test the serialversionUIDs against 5.0.0.GA including common/lib. There are currently no packages excluded. The following servialVersionUID errors were highlighted:

There are serialVersionUID mismatches(18)
serialVersionUID error for org.apache.catalina.manager.HTMLManagerServlet, 500 -6560342603107447699, current: -7818017532009393504
serialVersionUID error for org.apache.catalina.servlets.WebdavServlet, 500 1081609393609631596, current: -6697644805322019771
serialVersionUID error for org.jboss.classloading.spi.dependency.Module, 500 -838643286490488759, current: -2144597523286941302
serialVersionUID error for org.jboss.console.plugins.AOPLister, 500 769816273499474125, current: 6335074475159280483
serialVersionUID error for org.jboss.crypto.JBossSXProvider, 500 1, current: -2338131128387727845
serialVersionUID error for org.jboss.metadata.rar.spec.JCA15MetaData, 500 1, current: 7047132542344140262
serialVersionUID error for org.jboss.resource.adapter.jdbc.CachedPreparedStatement, 500 -1440572370373058834, current: 2085461257386274373
serialVersionUID error for org.jboss.resource.metadata.ConnectorMetaData, 500 7047130842894140222, current: -3049391010669865389
serialVersionUID error for org.jboss.resource.metadata.DescriptionMetaDataContainer, 500 -8988666040600469357, current: 2831943526217092377
serialVersionUID error for org.jboss.security.SimplePrincipal, 500 1, current: 7701951188631723261
serialVersionUID error for org.jboss.security.SubjectSecurityProxyFactory, 500 1, current: -8679600309865839261
serialVersionUID error for org.jboss.services.binding.DuplicateServiceException, 500 -4583185555225307385, current: 6008978514257402631
serialVersionUID error for org.jboss.virtual.plugins.context.vfs.AssembledDirectoryHandler, 500 2585655840467690716, current: -5434165071734018307
serialVersionUID error for org.jboss.virtual.plugins.context.zip.ZipEntryHandler, 500 548726342498176905, current: 3286854718137965247
serialVersionUID error for org.jboss.wsf.common.ResourceLoaderAdapter, 500 6701606092874682535, current: 6799639054488433438
serialVersionUID error for org.jboss.wsf.common.URLLoaderAdapter, 500 -5121659718738175599, current: 8263115387770740414
serialVersionUID error for org.jboss.wsf.common.servlet.AbstractEndpointServlet, 500 7169435221358960246, current: -1099745749214503454
serialVersionUID error for org.jboss.wsf.stack.jbws.EndpointServlet, 500 2512393459487245791, current: -466208060351255402