I started a blog where the client wanted two levels of user access. At the time, the Role Manager plugin was suggested to me and I used it to modify the Subscriber role so those people could read private posts and the Contributor role so those people could read private pages as well as private posts. This actually works fine except that the Role Manager conflicts with other plugins that reference the roles. Those plugins do not seem to know how to interpret the modified roles.
This site is still in beta and I'm going to try to reset the roles to default, delete the Role Manager, and hope it solves the problem. Then I'll use the UAM to control read access. If that doesn't work I'll have to start over from scratch.
So, finally the question...
Would the best thing to do be to delete the database and any plugins that I no longer want to use, then run the install script and start over with a fresh database? The site is in beta so there is nothing really posted there that I have to worry about losing. The biggest pain is that I'll have to set up about 50 user IDs again and let those people know that they will have to reset their password, which is not so bad.