I am currently facing the following problem with Maven 3 when I am trying to build the site. I will appreciate you help on this.
mvn clean site
The problem is not in your pom files. When I built your aggregation-pom, Maven downloaded normally the parent-pom from the remote repo (after I deleted from my local repo).
Try this:
mvn -U clean install site dependency:purge-local-repository
Additionally, you could do some clean up:
from all of them0.1-SNAPSHOT
and my.com
from projA and ProjB (they are inherited from the parent)