ok, it seems even though i sign in, i'm still in invisible mode. so the im bar isn't showing. i had to nav to any link on the site to make myself visble. then the im bay shows.
it seems when u logon n close browser, then get back on, it will show u in invisible mode even if u try to log back on. only until u click on a link on MR will it get u out of invisble mode.