Thanks for using EAN and sorry you are experiencing issues.
Can you please provide us with the following:
1. What version of WordPress are you using
2. What version of PHP are you running. You can get that information using the following plugin: http://wordpress.org/extend/plugins/wordpress-php-info/ OR uploading the attached file to your webserver and providing direct URL.
3. What is host you are using for your site? I.E. BlueHost, GoDaddy, MediaTemple, etc
4. If possible listing of what plugins you are using (Screenshot of your plugins page would work)
If you are using PHP 5.2x you should upgrade to at least 5.3.17. The latest stable version of PHP is 5.4.7. We are running 5.3.17. We haven't upgraded to PHP 5.4x just yet and will do so soon but know it works on 5.3x. Just know that if you do upgrade to 5.4x it hasn't been fully tested but should work OK.
Either perform the upgrade on your own if possible or contact your host to do the upgrade. It is advisable to make a backup of your database and files prior to doing upgrades and should have regular backups of the site anyway. There are wordpress plugins out there to create backups of your site such as http://wordpress.org/extend/plugins/backupwordpress/screenshots/. I would investigate if your host has a free backup solution you can use as well. I know Plesk has a free backup manager and likely cPanel does as well.