A couple of thoughts for you. –Are you creating a new theme from scratch? If so, drive on. If you are modifying an existing theme, changing another’s theme style.css file can be trouble. If you are modifying an existing theme, stop what you are doing, and spend 30 (yup, 30!) minutes to learn how to … Read more
First of all, never edit a core file. As soon as WordPress is updated, you will lose your changes. The part you’ve edited already has a mechanism in place to make the change you want without editing that file. All you need to do is add a filter to wp_feed_cache_transient_lifetime to set the lifetime in … Read more
Allowed memory exhausted is generally generated because the server can’t handle the memory usage of your site, and the actual memory issue can, as Pieter Goosen mentioned, really be anything on the site. Answers to your questions: It’s not too many plugins. WordPress can handle it 🙂 Probably not. If the storage of your website … Read more
Adding custom variables(query strings) to static resources doesn’t affect caching at some of the levels you’ve listed above: WordPress plugin caching Webserver software caching PHP opcode caching MySQL caching WordPress query caching Several more etc. All of these don’t cache static resources(js, css and so on) but rather cache the output of application codes at … Read more
I do not know plugin to control FastCGI cache in nginx. However, there are a set of nginx rules to use the WP Super Cache cache directly. Let us think – what is going on when site page is accessed? nginx accepts request and sees that index.php is needed nginx starts php-fpm (what is not … Read more
Did you already try adding all the mobile user agents to the “Rejected user agents” list in w3tc? I use this list for this purpose (not created by me and certainly not complete but enough for my purpose): iphone ipod ipad aspen incognito webmate android dream cupcake froyo blackberry9500 blackberry9520 blackberry9530 blackberry9550 blackberry9800 webos s8000 … Read more
This might be caused by the mod_pagespeed Apache module. You should talk to your hoster to disable this.
toscho is right. So you could probably give a try to another plugin. The Better WordPress Minify. This one also uses a folder inside the plugin’s folder, BUT. You can change the folder and place it elsewhere. Please have a look at Advanced Customization. screenshot http://s.wordpress.org/extend/plugins/bwp-minify/screenshot-1.gif We have been using it without a problem.
You need to update your database. Before updating your database to the live server, you need to verify the URL.
Turn off your cache, and the variables should work as expected. Caching saves copies of your output and doesn’t execute the code every time the page loads. As a result, server variables might contain information form a past page load as opposed to a current page load.