Thread:Project:Support desk/Getting blank pages in Safari. And how do I tweak memory limit?

My setup:


 * MediaWiki 1.17.0
 * PHP 5.2.17 (cgi)
 * MySQL 5.0.92-community-log
 * Running on a shared hosting server.
 * Note: I'm by no means fluent in web development. All I know is the little I've picked up through having to fix a problem. I've only used Wordpress before.
 * My wiki: http://wiki.ISFNpub.com

My problem:

When I'm editing using Safari, I get blank pages that I have to keep refreshing until the content shows up. Firefox doesn't seem to have this problem.

Reading here, it seems like I should tweak the memory_limit setting. However, I'm not very savvy with this stuff and those instructions are rather confusing to me. Where is this php.ini file located? How do I know how much memory I should set it to? (Is there a maximum?) How do I restart my webserver?


 * Edit: I found a php.ini file in the public_html folder, but it's very short (9 lines) and does not contain "memory_limit".

Keep in mind that I've never used Terminal to connect to a server; my experience ends with what is available through cPanel.

Thanks.