I can confirm that.
Deleting is only possible if the user has write permnissions on the
ENTIRE path.
/ top/subdir/mypath
In order to delete mypath, the user needs write permission on
/
/top/subdir
/top/subdir
/top/subdir/mypath
With an 1.6.x server, write access to /top and above were not necessary.
I could not find any documentation about this changed behavior. Next, it
is not really what we want. I don't want to give all users write access
on the entire tree up to the rootfolder just to enable them to svn
delete their own files and folders.