ACL is missing proper functionality, single sites cannot be write protected 'page lock'.

 

Please provide more detail.. The ACL can lockdown all files, groups, or indiviual pages.

 

To provide read only on all pages, the __acl_auth.acl file should look like... <?xml version="1.0" encoding="UTF-8" ?> 
 
<acl:acl xmlns:acl="//turland.net/WikiDX/acl" > 
<acl:item page="*" grp="all" lvl="1" /> 
<acl:item page="*" grp="named" lvl="2" /> 
<acl:item page="sandpit" grp="all" lvl="0" /> 
</acl:acl> 
Description of acl:item entries..

1. Allow browse only (level 1) for everyone on every page
2. logged in users get edit (level 2) - ie the 'named' group
3. The individual page 'sandpit' is locked down to everyone except 'admins' (level 0)

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Can only assume this has helped youre situation.