I made the mistake of installing Joomla (and a couple of plugins)
for my sister in law. She had such a tough time using it that I ended
up being person she called whenever she needed content updated. Even
then I had trouble going into the right area sometimes (not mention
dealing with components vs. modules).

For my own site I’ve installed FrogCMS; I use it as a CMS and blog.
So far I’m extremely impressed at the user interface. Still, it’s
pretty young so it’s thin on features and plugins but worth looking at
when you have simple needs.