AFAIK some EMF editors crashed in relased eclipse 3.1M5. There is now update available: Eclipse 3.1M5a.
I have also tried new Web Services wizards in latest WTP I-builds but with no luck. WS generation ends with various errors but never completes (once I'v got ClassNotFoundException on my JavaBean which I wanted to wrap with WS; Other time it ends with NPE or IllegalArgumentException in Axis classes or with 'AdminServlet not started' message). Maybe that is because I was trying to use Tomcat 5.0 runtime (which is claimed to be supported)? And another spotted glitch -- WTP supports only Axis 1.1/Apache SOAP and in every auto-generated proxy it contains import of package named 'org.apache.whatever.enum' which renders it pretty unuseable from J2SE5.0 developement point of view. I guess I will wait for WTP M3 release which should have those things done, and in mean time I'll play with XFire a little.