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subj

http://www.coolestguidesontheplanet.com ... -drupal-78 or you can try command "pecl install uploadprogress" on your server

If Drupal reports that PECL Uploadprogress is not installed, the following will guide you through installing it on CentOS 6.
For CentOS 6.4+

Update September 11, 2013: v 6.4+ of CentOS requires a simpler install. If you have an earlier version of 6 skip this step and continue on. If you have 6.4 or greater you may skip the other steps and simply input this command in your terminal:

user@host $sudo yum install uploadprogress
For Earlier Versions of CentOS 6

First, let's install php-devel which is a requirement of uploadprogress, then we can install uploadprogress itself.

root@host $yum install php-devel

root@host $pecl install uploadprogress

If uploadprogress doesn't install due to Pear missing then install Pear and repeat the above step.

root@host $yum install php-pear

In some cases you may receive "error: no acceptable C compiler found". If so, install GCC.

root@host $yum install gcc

To complete uploadprogress installation, in the Dynamic Extensions section of php.ini add:

extension=uploadprogress.so

Note: php.ini may be located in /etc/php.ini or if in CPanel configuration, /usr/local/lib/php.ini or /usr/local/Zend/etc/php.ini if Zend is installed.

Restart Apache:

root@host $service httpd restart

Thank you, the second instruction has helped. First instruction I have seen.
I had a problem with installing php-devel.
There shall be mounted so: