Source of org.hibernate.validator.engine.ConfigurationImpl

OK, I'm trying to get a validator working with a jsp form.. Have just started using maven, so it's all a bit new... what's the best way of locating which repository I should be selecting for the above class? I already have the following entries for validation:

    <dependency>
        <groupId>javax.validation</groupId>
        <artifactId>validation-api</artifactId>
        <version>1.0.0.GA</version>
    </dependency>


    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-validator-annotation-processor</artifactId>
        <version>4.1.0.Final</version>
    </dependency>

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-validator</artifactId>
        <version>4.1.0.Final</version>
    </dependency>   

I tried loading hibernate itself, but that broke the build: I'm using eclipse for persistence, and building fails after dragging in a huge number of prerequisite libraries.

I figured that I should get a better strategy than just stabbing away with repositories..

Just to be clear: I'm getting the error:

java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.validator.engine.ConfigurationImpl

This should be in the hibernate-validator dependency, so not behaving as I would expect.