I had regular issues with my MODx Revo installation for a while. The system demanded actions on my side to keep it working, for example, installing updates, making database backups and checks for security integrity. The last hacker attack deleted all data, which made me to reboot my blog using static HTML-docs. The reason is that there is nothing to hack!
That’s kind of fun, as I was developing something alike with my friend about 5-6 years ago. It was a CMS, which worked with static HTML-documents.