I have edited /etc/php.ini and have inserted the following line of code to set the subject variable:
upload_max_filesize = 20M
However, within a Joomla website on this host, the PHP Information screen says that this variable is set to only 2M. I have restarted Apache, then I restarted the machine, etc. Nothing seems to allow me to change this var. Installing some Joomla extensions requires this limit to be higher. Any ideas out there?