I filed a JIRA for a problem I recently experienced with m2e 0.10.0 (bad application.xml): http://issues.sonatype.org/browse/MNGECLIPSE-2176
Does JBT 3.1.0 and/or JBDS 3.0.x require m2e 0.10.0?
"For example Maven integration requires m2eclipse 0.10."
http://in.relation.to/14750.lace