Zlib Compression => Broken Path to Files in WordPress Multisite…

I’m running a multisite network on wordpress 3.6 with the W3 Super Cache plugin for performance. I’m on a virtual dedicated server, but the WordPress dashboard started loading so painfully slow, it was excruciating. So I did a quick search and found this “handy” tip on WPMU. The author suggested that using zlib compression would speed up my load times x3. So I took the advice and pasted this snippet in the header of my theme:

<?php
ini_set(’zlib.output_compression’, ‘On’);
ini_set(’zlib.output_compression_level’, ‘1′);
?>

Instead of “instantly seeing a huge performance improvement,” it screwed up something with the blogs.dir and now all uploads/media are broken links. I removed the above php snippet, but the links are still dead. I looked in the htaccess and wp-config, and didn’t see anything input from zlib.

Can anyone help me find a solution to this problem? Thank you so much in advance.