Sorry that it took so long to reply. I confirmed the crash when using wrong credentials, the fix will be in the next maintenance release, thanks for the report. However I can't reproduce the problem you have when using correct credentials, everything works as epxected. I'm using a 3.2.6 kernel instead of 3.1.0 though, could be a bug in the target but it would be great if you could attach a packet trace too be sure it is not a bug in VirtualBox.
