Upgrading Drupal

I just upgraded to the 4.5.0RC and things are lovely, except the header links that i had set for custom pages have disappeared. The defaults are there, but not the ones I created for pages I added. Also, when creating a new page, there is no longer the option to create a headerlink with it. Anyone?

Hi There,
Just created a new site with the 4.5.0 RC and it looks great! I'm very pleased with the changes made since 4.3.

I'm having a devil of a time. I went through the upgrade, and I got this error when I tried to enter a test comment:
----
user error: Column count doesn't match value count at row 1
query: INSERT INTO comments (cid, nid, pid, uid, subject, comment, format, hostname, timestamp, status, score, users, thread, name, mail, homepage) VALUES (1493, 1488, 0, 1, 'test', 'test', '3', 129, 1097028458, 0, '0', 'a:1:{i:0;s:1:\"0\";}', '2/', 'pennywit', '') in /home/editorja/public_html/pennywit/drupal/includes/database.mysql.inc on line 125.

Made changes/upgrades to my mailhandler module and
"Access denied" bug is fixed to be compatible with drupal 4.5R. The discussion started from this post http://drupal.org/node/11239. Please update the cvs accordingly,

-- function mailhandler_menu() {
++ function mailhandler_menu($may_cache) {

global $user;

$items = array();

++ if ($may_cache) {
++ $access = user_access('administer mailhandler');

I am interested in upgrading from 4.4.2 to 4.5, but cannot really do so unless the project module will work. Drupal.org is using the project module, but there is no 4.5 version listed on the downloads page, so I assume the site is using the CVS version and that it is working satisfactorily...is this correct?

Guess I got too excited about upgrading to 4.5.0. :) I need the image module, but it doesn't seem to be ready for 4.5. Can I reinstall 4.4.2 without messing with the database?