I have several Drupal sites on my reseller account; the others work fine.
Drupal has been PHP5 compatible since the 4.6 release, and both
birdfluhealth.com and growyourpower.com are version 4.6.6 or above, so it
shouldn't be a compatibility issue. However, this problem seems to have
started at the time of the upgrade, so is it possible that some server
settings (such as strict mode) might be affecting the sites?


What could it be, because those 2   sites doesn't load right.

here is the CODE

#
# Apache/PHP/Drupal settings:
#

# Protect files and directories from prying eyes.
<Files ~ "(\.(inc|module|pl|sh|sql|theme|engine|xtmpl)|Entries|Repositories|Root|scripts|updates)$">
  Order deny,allow
  Deny from all
</Files>

# Set some options.
Options -Indexes
Options +FollowSymLinks

# Customized error messages.
ErrorDocument 404 /index.php

# Set the default handler.
DirectoryIndex index.php

# Override PHP settings. More exist in sites/default/settings.php, but
# the following cannot be changed at runtime. The first IfModule is
# for Apache 1.3, the second for Apache 2.
<IfModule mod_php4.c>
  php_value magic_quotes_gpc                0
  php_value register_globals                0
  php_value session.auto_start              0
</IfModule>

<IfModule sapi_apache2.c>
  php_value magic_quotes_gpc                0
  php_value register_globals                0
  php_value session.auto_start              0
</IfModule>

# Reduce the time dynamically generated pages are cache-able.
<IfModule mod_expires.c>
  ExpiresByType text/html A1
</IfModule>

# Various rewrite rules.
<IfModule mod_rewrite.c>
  RewriteEngine on

  # Modify the RewriteBase if you are using Drupal in a subdirectory and
  # the rewrite rules are not working properly.
  #RewriteBase /

  # Rewrite old-style URLs of the form 'node.php?id=x'.
  #RewriteCond %{REQUEST_FILENAME} !-f
  #RewriteCond %{REQUEST_FILENAME} !-d
  #RewriteCond %{QUERY_STRING} ^id=([^&]+)$
  #RewriteRule node.php index.php?q=node/view/%1 [L]

  # Rewrite old-style URLs of the form 'module.php?mod=x'.
  #RewriteCond %{REQUEST_FILENAME} !-f
  #RewriteCond %{REQUEST_FILENAME} !-d
  #RewriteCond %{QUERY_STRING} ^mod=([^&]+)$
  #RewriteRule module.php index.php?q=%1 [L]
  # Rewrite current-style URLs of the form 'index.php?q=x'.
  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteRule ^(.*)$ index.php?q=$1 [L,QSA]
</IfModule>
# $Id: .htaccess,v 1.66 2005/03/20 19:15:00 dries Exp $