"uploadprogress" is the usual suspect for Drupal to track the progress of file uploads.
Installation is very straightforward:
- Login to WHM, https://ServerIP-Address:2087
- Go to: Software » Module Installers
- on the line "PHP Pecl," click "Manage"
- Paste "uploadprogress" into the "Install a PHP Pecl" box, click "Install Now"
To verify, reload your 'Status Report' page:
D6 or D7: /admin/reports/status