I just tried installing a brand new 2.3, and the identical thing happened – i.e., a screen with only the wordpress logo comes up, with no password, etc. Since I am fairly new to wordpress (certainly to 2.3), I was mystified, and wasted a bunch of time. (I fixed by manually entering a md5 hashed password into the db, but this was a hassle, needless to say). (BTW, I never got an email….)
Shouldn’t this be filed as a bug?