I'm new to the (super-fast) Cool VL Viewer, so sorry if this has come up before. I did a search here and found nothing.
Avatar login details are saved and are available in the drop-down list on the login screen. But they are not always saved. When logging in multiple avatars, the only one that is saved for the drop-down list is the first one to log in. I.e. the details are only saved when no other viewer instance already has an avatar logged in. That's according to my tests. I did the test with the new LL viewer and it saves the details of an avatar that is logged in and out while another avatar is logged in with the same viewer.
I often use multiple avatars while writing scripts but it's not a big deal. I thought it might be worth mentioning though. For a while I thought that the details of more than one avatar weren't being saved. I even searched through Preferences to see if I could turn multiple details on