2011/8/8 laurent laffont <laurent.laffont@gmail.com>
It seems chrooting each account is not so easy.

I had a chrooted seaside instance running some time ago. I wrote about it on my now abandoned blog, but you can find the contents still here:

http://web.archive.org/web/20090331220201/http://blog.blobworks.com/2008/12/16/squeak-in-jail

This might be of help if you still want to setup a chroot environment, but I guess this still falls into the category of "not so easy". :-]

Alex