CronTriggerBean extends CronTrigger - this causes an IncompatibleClassChangeError with quartz 2.0.2 on the classpath, because CronTrigger is an interface in quartz 2.
Quartz 2 being around for a couple of months now, it will be good to upgrade spring to support it.
Note that this issue is not manifested in Tomcat 6 - only in Tomcat 7 (but it is missing in the version drop-down). I believe this is a classloader change, so I'm also reporting an issue to Tomcat. (We are not using this particular class, but tomcat still loads it).