What's going on here?

Cloud9 creates a separate virtual machine for each workspace. In order to provide a free service for everyone, we hibernate workspaces of non-premium users after one week of inactivity. This is because the virtual machines constantly use resources even if the workspace is not actively used.

Please wait a moment while we wake up your workspace. It will be just as you left it.

Upgrade to premium to make sure your workspace never goes into hibernate.

Preparing your workspace
Waking up your workspace from hibernate.