wrong metadatas

Hy,

I get strange behaviour wen using repository group :

From a fresh maven installation (empty local repo), with settings set to
mirror central to my archiva repository group URL, the eclipse 2.5 plugin
can't find the required org.eclipse.core:resources:[3.1.0,4.0.0)

The maven-metadata.xml returned by the group URL is emty. requesting
metadatas from individual managed repos in the group are fine. Is this a
known limitation ?

Nico.