Any developer knows, the process of upgrading software tools always starts a chain reaction. I have been using Hibernate 2.x for a long time, and finally decided to update to 3.x, largely to make use of the supposingly better tool set available for Eclipse. After installing Hibernate 3, I started to install the Hibernate Tool into my Eclipse IDE. Then I realized I needed Eclipse 3.2 instead of 3.1. Of course, Eclipse makes upgrading all sort of things easy by the update manager, except upgrading from 3.1 to 3.2 ! You have to do a manual install. Note that you should not install 3.2 over an existing 3.1 installation. Which mean installing to a new directory, and then re-install all the plug-ins. I did not run into any problems, but still it is a lot more manual then I thought it would be.