Some issues that builders should be aware of. Wyn's seen this with a 4 prim sculpty tree that had a Land Impact of 47 when the physics type was set to none.
https://jira.secondlife.com/browse/SVC-7586?
http://blog.nalates.net/2012/04/28/seco ... to-change/
https://jira.secondlife.com/browse/PATH ... ent-321871
https://jira.secondlife.com/browse/PATH ... ent-321951