Is there any chance that you can fix the metadata on central for these artifacts? If I look at the maven-metadata-central.xml that gets copied into my local repository, it has the following:
<?xml version="1.0" encoding="UTF-8"?>
You can see that it still lists the SNAPSHOTS. I'm using Maven 2.0.11, and whenever I use groovy-eclipse-compiler which has a version-range dependency on groovy-eclipse-batch, it tries to download 1.8.0-SNAPSHOT-02 (I have no idea why). I can add an explicit dependency to the correct version of groovy-eclipse-batch, but it still insists on trying to download version 1.8.0-SNAPSHOT-02. When it doesn't find it, it carries on and the build works, but it still adds a few seconds delay every time I compile the project...