This release fixes an issue where CCK's NULL placeholder UIDs could cause permissions being granted to anonymous users. It's HIGHLY advisable that you deploy this fix.
Users affected by this that do not want anonymous access granted should run this query: DELETE FROM node_access WHERE gid=0 AND realm='userref_access_field_profile_admins'
This release increases performance in hook_node_grants() by statically caching node grants. This is most noticable on pages with a lot of nodes (i.e. views pages, etc).
