warning: Invalid argument supplied for foreach() in /home/xxx/public_html/includes/common.inc on line 789.

I did updates a few days ago to some modules, I'm not sure if this has anything to do with that, but when looking trying to look through "recent log entries" under Administer, a huge red box appears with these warnings. Can anyone help me to figure out what is the issue and how I can resolve it please?

warning: Invalid argument supplied for foreach() in /home/xxx/includes/common.inc on line 789.
warning: strtr() [function.strtr]: The second argument is not an array in /home/xxx/public_html/includes/common.inc on line 806.
warning: Invalid argument supplied for foreach() in /home/xxx/public_html/includes/common.inc on line 789.

Next, when looking at the status report after updating those modules to see if everything installed correctly, there was a yellow box with this message

"Upload progress Not enabled
Your server is capable of displaying file upload progress, but does not have the required libraries. It is recommended to install the PECL uploadprogress library (prefered) or to install APC. "

This is the clickable link website that is listed next to "(prefered)" http://pecl.php.net/package/uploadprogress.

I really have no clue as to what it is and how to do it, or where to install this, could I please get assistance in this as well. Any help is appreciated, I'm still learning Drupal and it would be of great assistance if anyone with the knowledge can help me with these issues please? Thanks.