When creating a new folder from the web interface:

New folder action failed:
A folder named ‘blah’ could not be added because of an unknown error.

When uploading a file from the web interface:

An error occurred saving the uploaded file. The upload has been aborted. The error was: ‘Error saving file: 5-1-1.JPG – I/O error: Connection refused’

In order to resolve the issue, all three Filr appliances (Filr, MySQL, and Search) must be rebooted. This issue happens to us nearly every day. Has anyone else experienced this issue?