Although the binaries in the OpenJDK7 RPMs have debug info in them, class files don't. This significantly limits debugging capabilities with Eclipse when it comes to looking at state of JDK/JRE class instances. This is a regression compared to OpenJDK6 and must be fixed.
java-1.7.0-openjdk-1.7.0.3-2.1.fc16.1 has been submitted as an update for Fedora 16. https://admin.fedoraproject.org/updates/java-1.7.0-openjdk-1.7.0.3-2.1.fc16.1
Package java-1.7.0-openjdk-1.7.0.3-2.1.fc16.1: * should fix your issue, * was pushed to the Fedora 16 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing java-1.7.0-openjdk-1.7.0.3-2.1.fc16.1' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-2388/java-1.7.0-openjdk-1.7.0.3-2.1.fc16.1 then log in and leave karma (feedback).
java-1.7.0-openjdk-1.7.0.3-2.1.fc16.1 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report.