dleber

jbravo556, did you upgrade from an earlier version of WP?

If so there is a chance that the gzip compression option is still set in your db even though WP 2.5x doesn’t use it. Search the wp_options table for an option_name of ‘gzipcompression’ and set it’s option_value to ‘0’, then try wp-cache again.

Yeah Clint, that fixed it for me.
I changed the last two lines of wpNofollow.php to read:
add_filter('comment_text', 'nofollowfy', 10);
add_filter('comment_excerpt', 'nofollowfy',10);