Ohh Eclipse. You really got me spinning these days.

When validating a wsdl you told me "The validation completed with no errors or warnings." even tough there were some obvious erros in there and even the graphical representation showed that.

But the validation completed, so I figured the validator is turned on but not working, maybe broken or misconfigured.. Turns out it was not.

Windows -> Preferences -> Validation -> [] Suspend all validators. After unchecking this you need to restart eclipse (full rebuild as suggested wouldn't do it in my case).

Improvement request: Tell me that validators are actually suspended instead of telling me all of them (in this case none) completed with no errors or warnings.