I want to upgrade jQuery inside my drupal installation. At the moment I have jQuery 1.2.6 and I would like to upgrade it to jQuery 1.4
I guess some Drupal modules st
jQuery 1.4 breaks quite a few ajax bits in the admin UI, which are pretty essential. Luckily you can get around this by loading a different version of jQuery depending on what page you are currently viewing.
I recommend using the jQuery update module and modifying it with one of the solutions here (#7 or #11):
http://drupal.org/node/775924