"uploadprogress" is the usual suspect for Drupal to track the progress of file uploads.

Installation is very straightforward:

1. Login to WHM, https://ServerIP-Address:2087
2. Go to: Software » Module Installers
3. on the line "PHP Pecl," click "Manage"
4. Paste "uploadprogress" into the "Install a PHP Pecl" box, click "Install Now"

Done.

To verify, reload your 'Status Report' page:

D6 or D7: /admin/reports/status

That's it!

I posted these same instructions on Drupal.org, https://www.drupal.org/node/2079729 . Which has Install PECL uploadprogress, https://www.drupal.org/node/793264 , for many other control panels and operation systems.

Best,

Michael