Hello Jolanda.
Have you ever before logged in with your alt to the aditi-grid? I suppose no. The aditi-grid (test-grid) has an user-database that is completely seperated from the agni-grid (the live grid). In former times, LL took a "snapshot" of the agni-databases about once a month or so and transferred it to the aditi-grid. So it was possible, that new created avatars could also log in to aditi-grid after some reasonable time.
But this times have gone. My alt is more than 400 days old and is even not able to log in to the aditi-grid for the same reason. Until now I did not ask for a database-refresh simply because it was not necessary.
Ask Oskar Linden inworld for a account transfer of the db-entries according your alt. Also join the Second Life Beta Group to get news on the aditi-grid. read more about here: http://wiki.secondlife.com/wiki/Aditi
Friendly Greetings,
Haruko
edit: exactly your problem is answered here: http://http://wiki.secondlife.com/wiki/Preview_Grid_Common_Questions#I_can.27t_log_in.3B_It.27s_asking_about_checking_my_password_for_caps_lock._What_do_I_do.3F
edit2: Oskar Linden transferred my alt's account while I was chatting with him; the whole procedure only took a few minutes.
Message was edited by: Haruko.Kaligawa