[Zope] Help!

I have 3 different versions of Zope running on my machine. 2.33, 2.41, 2,43. I was working on my site in 2.41 and shut it down and started up 2.33 to export some items. I then shut down 2.33 and fired up 2.41 again and when I logged into the management interface, everything was gone. My site folder, all of my installed products, and the wierdest thing of all, I had to delete the default index_html file in my root folder to get apache to work properly, and it is back! It looks just like I just installed it from the tarball. I checked the 2.43 site and everything in it is gone also. The 2.33 install is still fine. I have backups, but is this normal behavior??? Michael