I was using Quartz 1.6.x.jar, postgresql-8.4.x.jar with Postgresql 9.1 database in my application. Though my application started properly, there were exceptions in the log, as mentioned below:
org.quartz.JobPersistenceException: Couldn’t store trigger: invalid stream header: BB656430
It was more of a compatibility issue with quartz and older postgresql drivers with latest Postgresql 9.1 database. My suspicion was proven when i referred to this blog (by Timmy Jose) and followed its advice.
You can download the latest postgresql jdbc driver from here.
Bemused 