Your PHP settings limit the maximum file size per upload to 4 MB

Curious as to why this is being changed in 3 ways. It should only need to be changed once. If you have access to custom php.ini thats the only place you need to change it.

What you've done is now made it that much more difficult to make another change without changing 3 different files and that seems unnecessary.

I added the values to the best spots i could see but it didn't work. Here is the exact text i have. Maybe you could look it over and let me know if i did it right?

#
# Apache/PHP/Drupal settings:
#

# Protect files and directories from prying eyes.

Order allow,deny

# Don't show directory listings for URLs which map to a directory.
Options -Indexes

# Follow symbolic links in this directory.
Options +FollowSymLinks

# Customized error messages.
ErrorDocument 404 /index.php

# Set the default handler.
DirectoryIndex index.php

# Override PHP settings. More in sites/default/settings.php
# but the following cannot be changed at runtime.

# PHP 4, Apache 1.

php_value post_max_size 100M 0
php_value upload_max_filesize 100M 0
php_value magic_quotes_gpc 0
php_value register_globals 0
php_value session.auto_start 0

# PHP 4, Apache 2.

php_value post_max_size 100M 0
php_value upload_max_filesize 100M 0
php_value magic_quotes_gpc 0
php_value register_globals 0
php_value session.auto_start 0

# PHP 5, Apache 1 and 2.

php_value post_max_size 100M 0
php_value upload_max_filesize 100M 0
php_value magic_quotes_gpc 0
php_value register_globals 0
php_value session.auto_start 0

# Requires mod_expires to be enabled.

# Enable expirations.
ExpiresActive On
# Cache all files for 2 weeks after access (A).
ExpiresDefault A1209600
# Do not cache dynamically generated pages.
ExpiresByType text/html A1

# Various rewrite rules.

RewriteEngine on

# If your site can be accessed both with and without the prefix www. you
# can use one of the following settings to force user to use only one option:
#
# If you want the site to be accessed WITH the www. only, adapt and
# uncomment the following:
# RewriteCond %{HTTP_HOST} ^example\.com$ [NC]
# RewriteRule .* http://www.example.com/ [L,R=301]
#
# If you want the site to be accessed only WITHOUT the www. prefix, adapt
# and uncomment the following:
# RewriteCond %{HTTP_HOST} ^www\.example\.com$ [NC]
# RewriteRule .* http://example.com/ [L,R=301]

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

# 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]

# $Id: .htaccess,v 1.81 2007/01/09 09:27:10 dries Exp $

Note that you are also limited by your php memory_limit. See what http://php.net/ini.core says about post_max_size.

This means that with a memory_limit of 64M, a single POST operation in a node editing form can upload less than that.

So, when people need to upload very large files they often use tools which partly bypass PHP's uploading method, for example with Flash, like http://drupal.org/project/swfupload which can upload up to 2G files.

That was the perfect solution for me.

Likely depends on what file you worked with. PHP.ini is distributed using M, for example.

or download the -dev version of drupal which will be come 5.8

For the values that you are using, you must have a memory_limit at least 64M.

If you added the "php_value ..." lines in a php.ini file, they are wrong. The syntax beginning with "php_value" is only for .htaccess files. See the examples.

Run a phpinfo() in a drupal page (see http://drupal.org/node/59680) to check whether your settings for memory_limit, post_max_size and upload_max_filesize work or not.

Check for any limit in Drupal's settings in admin/settings/uploads (if you are using the core upload module) or in the settings of the module that you are using for your uploads.