Welcome to Help
Well, I downloaded the WIndows installer, and set the interface to be on my local PC. Fired up the login from the shortcut created, and I was asked for the undername and password that I'd set up. Entered those, and clicking the button merely repainted the same screen. Checked the log files, and we're missing a couple of graphics files (specifically ~\site\favicon.ico and ~\site\config\initial\images\blank.gif) Anyway, I added a couple of files to get round those messages, and no difference in what happened, except that no further messages were written to the log file. I'm running Win2000 SP4, and I've tried both IE6 and Firefox1.0 as the browser.
Appears to me that a little more testing is required...