Even after wiping out my settings.xml, I still get this error when trying to use this snapshot dependency. Given the dependency:
Not sure exactly, but looks like they might be using some form of the "buildnumber" maven plugin to include version control revision numbers.
Take a look at http://snapshots.repository.codehaus.org//org/codehaus/mojo/tomcat-maven-plugin/1.0-SNAPSHOT/maven-metadata.xml and you'll notice that in addition to the normal stuff, theres a xml tag for buildnumber and timestamp.
This may not be ideal, but you might be able to replace:
1.0-SNAPSHOT
with:
1.0-20091222.232027-11
To at least get up and running with the latest version of the plugin.