I had a lot of trouble with this in the past and a few people have asked me how to get rid of the getting started tabs in the vSphere client (yes, after unticking the option in client settings) The trick is that the setting for showing the getting started tabs appears to propagate down the object hierarchy in a similar manner as permissions do, although sometimes not after changing somewhere lower down. Unticking the show getting started tabs at the top level (hopefully first time round) will remove all of the tabs unlike where a number of people have seen where they have to go and remove each tab manually after using the option further down the tree.