Cannot re-order the blocks of Drupal 7 site This error happens just on my local server (I use the last version of Acquia Dev Desktop, kind of XAMP for Drupal), not on our remote servers:

I am suddenly unable to re-order the blocks of our site (Drupal 7.23). The drag-and-drop functionality is not working and entering the weight numbers manually either. I have researched this problem and tried all solutions posted (Aggregate JS, disable LightBox2, change the DB block fields from tiny to INT...).

We have a large number of files in our website, and in some regions they have reached the magic number of 127. Reading a few posts, I see this may be the problem when you have some DB fields defined as tiny, but after changing all the tiny (4) fields of the blocks table to INT(11) I do not see any change.

Any clue?

Thank you very much in advance.
If there's no javascript error in the console, and you have a lot of blocks, and are using the Suhosin extension, you may be hitting a Suhosin limit. If that's the case, you will need to increase the relevant values there. There may be more information in your server error log.

More info: http://www.hardened-php.net/suhosin/configuration.html#suhosin.post.max_vars