I was just encountered with the need to have a multi-site drupal install which utilized a specific theme for each site. In a lot of cases, multi-sites are set up on one drupal install, but utilize individual databases for each site. This is done by setting $db_url in settings.php to point to the database to be used for each site.

In our case, we needed to have a multi-site platform on one drupal install using only one database, but each site needed to display its own theme. This is accomplished by modifying each settings.php file for each site and un-commenting the following code.  read more »

As most of you might know, Ubercart is chock full of AJAX, jQuery, and Special Sauce that both helps users along and also keeps them safe. One of those safety features is a nice little security check function which erases the credit card information on the Checkout Review page (cart/checkout/review) should a user's browser be refreshed. If a refresh occurs, the user gets redirected back to the cart/checkout page and must re-input their credit card information and then re-submit the form in order to get back to the Checkout Review page again.

This, as you might have guessed, is *really* not themer-friendly.  read more »