Comment 12 for bug 344522

> Also doesn't seem to work; I only have one profile and the 'set as
> default' is ghosted out.

That is because that one profile is the default already. If you create a new profile and select it then it will allow you to set it as the default.

If you right-click in an existing terminal session and select "Edit Current Profile" and look at the title of the dialog that pops up, which will give you the name of the profile being used for that session.