At Optimise Web our web servers have a maximum upload limit of 2MB. Occasionally we have clients who want to upload larger PDFs into their media library. Rather than increasing the limit for all domains, we can override this limit on individual domains. Some shared hosting accounts have similar restrictions and will not increase it for individual clients. Here’s one way you can try to override the imposed file size limit:

In the root directory of your server (the folder where your WordPress install lives), look for the .htaccess file. Open this file in your editor of choice and add the following lines…

php_value upload_max_filesize 3M
php_value post_max_size 3M
php_value memory_limit 3M

This increases the allowed file size and also the amount of memory the server allocates for running the PHP scripts need to perform the upload.

Of course 3M represents a 3MB file size. You can change this for your own value.

Find the function which calls your menu, the main menu function appears in the header.php file in the default TwentyTen theme. It looks something like this…

<?php wp_nav_menu( array( 'container_class' => 'menu-header', 'menu_class' => 'main-menu', 'theme_location' => 'primary' ) ); ?>

To exclude a page from this menu you would add the following code to the array…

'exclude' => 'YOUR_HIDDEN_PAGE/POST_IDs'

Page and Post ID’s should be comma seperated. So now the menu function looks like this…

<?php wp_nav_menu( array( 'container_class' => 'menu-header', 'menu_class' => 'main-menu', 'theme_location' => 'primary', 'exclude' => '6,12,18' ) ); ?>

To find your post or page ID, in your WordPress admin go to the post or page you want to hide, as if you were going to edit it. Look at the URL of that page in your browser. It will look like this…

http://your_domain.com/wp-admin/post.php?post=2&action=edit

Your Page or Post ID is highlighted in bold above. In this case the page ID is 2.

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Deleting the file called “.maintenance” in the root of the site’s public folder should fix the maintenance mode issue. In most cases the file upgrade would be done successfully and progress stuck at the database upgrade stage. After deleting this file, you might have to hit Refresh on your browser to release the maintenance mode. Then, you will be prompted for a database upgrade, if it is required.

Source: http://wordpress.org/support/topic/30-stuck-in-maintenance-mode-after-failed-plugin-upgrade

This problem arises when using the Twenty Ten theme or a theme designed using the Twenty Ten theme in conjunction with the All in One SEO Pack plugin. If you have set the configuration to not display the Blog Title as follows, the title function causes the above problem.

The Fix

Open the functions.php from the Twenty Ten (or your modified) theme directory. Go to line 262 (approx) and comment out the following line of code.

add_filter( ‘wp_title’, ‘twentyten_filter_wp_title’, 10, 2 );

WordPress 3.0 is awesome!