The recent announcement that Spring will start using Maven exclusively for their build has sent horrors down my spine. Fortunately, I'm not the only one who feels this way with many blogs around the net spreading their dismay.
Maven, in my opinion, has caused more hassle than it is worth on two projects I have been involved in (Groovy and Cocoon) and I made a concious decision to avoid it when starting Grails.
Luckily, there is a new issue on the Spring JIRA that lets you vote AGAINST Spring using Maven. Cast your vote now. Your grandchildren will remember you for it.