Page 404 is displayed to the user when try to load a nonexistent page. It may have been removed or the user can click on the incorrect link. Many servers have a default 404 error page, but which are not very useful. That is why every website should have a specially prepared page 404.
errors
Warning: strtotime() – PHP 5.3 and Joomla!
If you suddenly, unexpectedly, on the main page of your Joomla! received a message : „Warning: strtotime() [ function.strtotime]: It is not safe to rely on the system’s timezone settings (…)”, don’t worry, and do not panic.