Users of the Typograph theme build 0.8.3 and lower who upgrade to WP 2.7 Coltrane will experience a complete breakdown of their blog - both front end and back end. After the WP upgrade they will get this message:
[error] PHP Fatal error: Cannot redeclare post_class() (previously declared in /server/path/here/public_html/wp-includes/post-template.php:282) in /server/path/here/public_html/wp-content/themes/typograph/functions.php on line 157
The problem has been fixed and a new fully functional version of the theme is available here:
The problem was caused by two custom functions called post_class() and comment_class() in the theme. These two were adopted in WordPress 2.7 so there was a massive conflict between the WordPress functions.php file and the Typograph functions.php file.
I have uploaded an updated version of the theme that deals with this problem to the theme directory. In the meantime while it's being approved by the powers at be you can go to my blog and download a fully working WP 2.7 Coltrane version. If you replace the old theme directory with this new one everything will be working perfectly again:
Sorry for any panic/inconvenience this may have caused.