I tried the new build and there was no change.
I made a new project against a public webservice to show that it's not an issue with out own webservices.
You will probably be able to reproduce the issue with the Shakespeare project that I have attached.
Btw, I'm using
c:\dev\tls\soapui\soapui-pro-2.5.1 13-Feb-2009 1423\bin>java -version
java version "1.6.0_11"
Java(TM) SE Runtime Environment (build 1.6.0_11-b03)
Java HotSpot(TM) Client VM (build 11.0-b16, mixed mode, sharing)
and your binary version. if it works well for you, then that could that be the difference we're experiencing.
I've attached the "usual suspects"