If you want to stop Evolution from running in the background, even if you don't use it, and save some RAM, here is a quick way. Supposedly, you can't un-install it, since other programs depend on it. But by preventing the file from being executed you can prevent it from starting.
By installing Memcached on your server, you can speed up the load time for your web site pages.
From the official web site: "Free & open source, high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load.
Setting up a Linux installation can be done in many different ways, but preserving your settings and bookmarks is nice, so you don't have to redo them after a re-installation. This set-up uses another partition (in the example, called "archive") to store your photos, documents, settings for installed programs and your mail program, and connecting to them via symlinks.