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 renaming the folders it is located in, you can prevent it from starting up after reboot:
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.