Now that we will no longer be supporting HSQLDB, I believe that the work for
KNL-1000 and the tomcat pooler should be switched over at the default for Sakai 11.
I spent some time tonight just trying to figure out why DBCP jars were conflicting, and it looks like this has come up with other people.  Switching over to this pooler solved all my problems. And this pooler is supposed to have a lot of advantages over the dbcp one.  At least switch this over in trunk and see how it goes. It's possible to switch it back and forth via a configuration file