Eclipse Virgo 2.1.0.RELEASE
When deploying com.springsource.org.hibernate.ejb-3.4.0.GA.jar to Eclipse Virgo an exception is thrown.
"The problem is caused by Virgo having upgraded Logback and slf4j in order to fix a severe logging problem. Changing the manifest of com.springsource.org.hibernate.ejb-3.4.0.GA.jar to import the package org.slf4j with version range [1.5.3, 1.7.0) instead of [1.5.3, 1.6.0) fixes the problem."
Attaching a jar with the fixed manifest.
For additional details please see the support JIRA: