special update!
identified an issue in opensimulator server code with /homeagent that allowed anyone on the internet to post fake info including ip address with just a avatar uuid and add entries to presence. if you had weird ghosts show up on your grid could be why maybe. who know what else somebody else could do with that. anyway /homeagent is used when you teleport to another grid or back home. I changed it so it has to get a secure session id to accept data. i arbitrarily decided to make the life of the token 8 hours. So if you are on any grid more then 8 hours without teleporting to another grid you may have to relog before teleporting. You can stay on the grid longer just not teleport anywhere. I can change that if it's an issue. the other problem had to do with assets that came in with meta data but no assets, they were piling up and causing an effect like washing tennis shoes in the washer. now the incoming metadata can only last 15 minutes without corresponding asset data or gets wiped. this is on new assets as the come in, does not mess with existing assets. have fun!