Just a quick note that on October 20, just in time for Halloween, the new version of the Spring framework, v3.0.5 was released. Oh yeah, Hibernate 3.6.0 is Final, too!
I’ve converted a few projects, and had no ill effects; haven’t had to change one line of code, no tests failed, no new Exceptions got thrown. A simple swap of the JAR files, or a change of the version number (from 3.0.3.RELEASE to 3.0.5.RELEASE) in my Maven POM files did the trick.
The changelog.txt notes a bunch of changes since I last notice a Spring release (v3.0.3), the most notable of which is full support for Hibernate v3.6.0 Final (3.6.0.Final for your Maven versions).