This override from howto does not, I repeat, does not change the title in the first row of the first table in Generator.
It changes the displayed name. By name, I mean the lone %%user%% out in the center of the main cell in the first table, not the "%%user%%%%user-'s%% LiveJournal Entries" in the top row to the left.
So please, please stop linking to this when someone asks to change their title and/or specify "John Doe's Journal" as what they want to change. I will not approve you (unless our admin says otherwise).