Upgrading Drupal

I upgraded my site from 5.7 to 5.10. Now the problem is on some pages, if I refresh the page, the content is blank, but if I login as an administrator and click the "empty cache" the content can display. What should I do?

Thanks!

Trying to upgrade Drupal 6.0 to 6.4. Followed upgrade instructions. When I ran the update.php it gave me the warning and when I clicked "Continue" it just displayed a blank screen. When I try to access the site it displays the error "Fatal error: Call to undefined function user_current_load() in /home/chrilyn6/public_html/drupal6_4/includes/menu.inc on line 408".

I've already done some upgrades on my local machine (localhost) but this time I keep having problems. The last problem I'm left with: under status report I find:

VERSION INFO:
Drupal 6.4

CORE UPDATE STATUS
Drupal core update status Not secure! (version 6.4 available)

What's up? I ran update.php, cleared the cache (even though no caching is enabled), logged out/logged in, restarted webbrowser. I've run out of options and therefore am posting here. Thanks for any input.

Cheers,
John

While upgrading from 6.3 to 6.4 my default.settings.php file will not update. I've tried renaming and deleting the old file with no luck. So how are you supposed to update this file? If it helps I'm hosting on godaddy.

BS"D

I got the following errors when updating:

_ec_mail_modref() SERIOUS ERROR! Your system is not functioning properly. Consult your system administrator and DO NOT, repeat DO NOT, modify any mail settings.

After upgrading to 5.10, I noticed a problem in my template. Calling a node via node_load ceased working. This line now returns empty:

$thisnode = node_load(array('nid'=>$node->nid));   

I finally tracked down this workaround which does in fact return the node data: