Livelink crash

Leonardo_Mora_(fordfn01admin_-_(deleted))

I need to know if someone has experienced the following:When a user tries to log in the servers frozes. You cannot edit the user account getting a error "The database connection has been lost, please contact your administrator."There is no cascading on groups. You cannot edit the group. If you migrate the database to other site, it works fine. Tried the following:Reindexing database - NothingReinstalling LL SP3 - NothingEditing the database removing user account from groups- NothingWe are using DS NTLM. Support can not find anything in the logs. It got to a point where you get referred to Microsoft. Any insight much appreciated.