title: Nexus only downloading POMs from central repository rather than JARs
body: <p>I am having a really strange problem with Nexus (version 2.6.2-01). I have tried enabling/disabling remote indexes but I am still running into the same problem. I have running the maven-release-plugin and whilst trying to download the dependencies of this plugin, it fails with the error</p>
  
  <p>Could not find artifact org.codehaus.groovy:groovy-all:jar:1.7.6 in nexus</p>
  
  <p>I previously got the same error with org.apache.maven.plugin-tools:maven-plugin-annotations:jar:3.2 and I had to manually delete it using Browse Storage and then try to run the release plugin again to get it to download the artifact properly.</p>
  
  <p>If I Browse Remote on the central repo in nexus, it shows the complete contents of the artifact, however if I Browse Index, the jar for groovy-all 1.7.6 is missing, this is the same if I do a general search for groovy-all 1.7.6.</p>
  
  <p>My settings xml is configured as suggested in the Repository Management with Nexus book, i.e.</p>
  
  <pre><code>&lt;mirror&gt;
      &lt;id&gt;nexus&lt;/id&gt;
      &lt;mirrorOf&gt;*&lt;/mirrorOf&gt;
      &lt;name&gt;Nexus Public Repository Group&lt;/name&gt;
      &lt;url&gt;http://localhost:8081/nexus/content/groups/public&lt;/url&gt;
  &lt;/mirror&gt;
  
   &lt;profile&gt;
    &lt;id&gt;nexus&lt;/id&gt;
    &lt;!--Enable snapshots for the built in central repo to direct --&gt;
    &lt;!--all requests to nexus via the mirror --&gt;
    &lt;repositories&gt;
      &lt;repository&gt;
        &lt;id&gt;central&lt;/id&gt;
        &lt;url&gt;http://central&lt;/url&gt;
        &lt;releases&gt;&lt;enabled&gt;true&lt;/enabled&gt;&lt;/releases&gt;
        &lt;snapshots&gt;&lt;enabled&gt;true&lt;/enabled&gt;&lt;/snapshots&gt;
      &lt;/repository&gt;
    &lt;/repositories&gt;
   &lt;pluginRepositories&gt;
      &lt;pluginRepository&gt;
        &lt;id&gt;central&lt;/id&gt;
        &lt;url&gt;http://central&lt;/url&gt;
        &lt;releases&gt;&lt;enabled&gt;true&lt;/enabled&gt;&lt;/releases&gt;
        &lt;snapshots&gt;&lt;enabled&gt;true&lt;/enabled&gt;&lt;/snapshots&gt;
      &lt;/pluginRepository&gt;
    &lt;/pluginRepositories&gt;
  &lt;/profile&gt;
  
  &lt;activeProfiles&gt;
      &lt;activeProfile&gt;nexus&lt;/activeProfile&gt;
  &lt;/activeProfiles&gt;
  </code></pre>
  
  <p>This is getting really annoying as I expect Nexus to download require artifacts from central!</p>
  
  <p>Thanks</p>