I upgraded v. 1.2 to v. 1.2.1 on 10/14/2004. When I tried the upgade on my localhost server (Easy Web Server v.1.5), copying all the files except index.php and wp-layout.css, I had some of the same problems that I encountered when I was making my first WP installation. After I worked through the errors I had made, v. 1.2.1 works very well on that server. The improved login screen is great, allowing return to blog, etc.
Being a little more paranoid about my <real> weblog on my <out there> server, I decided to examine all the files and only replaced those files which had been modified since v. 1.2. This are the list of files that I replaced.
admin-header.php 10/5/2004 11:22 PM
bookmarklet.php 10/5/2004 7:01 PM
categories.php 10/5/2004 7:01 PM
edit.php 10/5/2004 7:01 AM
functions.php 10/5/2004 5:39 PM
functions-formatting.php 10/5/2004 5:39 PM
link-manager.php 10/5/2004 5:39 PM
links.php 10/5/2004 5:39 PM
link-update-cache.xml 10/5/2004 5:39 PM
options.php 10/5/2004 7:01 PM
options-reading.php 10/5/2004 5:39 PM
post.php 10/5/2004 7:01 PM
profile.php 10/5/2004 5:39 PM
upload.php 10/5/2004 5:39 PM
version.php 10/5/2004 7:01 PM
wp-admin.css 10/5/2004 7:01 PM
wp-comments-popup.php 4/20/2004 5:56 PM
wp-comments-post.php 10/6/2004 11:55 AM
wp-login.php 10/6/2004 12:34 AM
When I viewed my weblog, http://www.stephenfox.us/wp/ it came up readily and I thought I had it made. Imagine my horror when I tried to log-in. Neither my personal log-in nor my site admin login moved the focus to the admin panel. It just blinked like it used to before I got the wp-login.php from http://www.sexygirlgeek.com. I decided to replace just wp-login.php from my backup copy and then everything worked very well.
I have no clue why the wp-login.php file works on my local server, but not on the online server. Any ideas?
Other than that, it looks like v. 1.2.1 is ready for prime time.