Just to be sure, you have "svn checkouted" stable/3.5 not stable, haven't you (if you take stable, you end up with all the versions, quite big).
No matter what, when you svn checkout, you don't only get the files, but a lot of .svn folders, keeping track of the history, that's quite a lot of space and might explain the difference.
I personaly use svn 3.5 and it works fine. I don't remember having had problems with the setup, but I'm sure that's the easiest way to keep the latest version.
Thank you for those informations. I hadn't think about all the .svn files in each dir.
I confirm my SVN/stable/3.5 was outputing errors during setup.
Is it possible to synchronize a manually installed ezpublish distrib ? I mean the version i currently use was installed by hand. Is there a way to keep it up to date with SVN ?