out-of-sync in juno

Lightweight refresh enabled by default

In Eclipse 3.7 a new lightweight refresh mechanism was introduced. Files discovered to be out-of-sync by the workspace, for example while accessing the file content by an editor, are automatically asynchronously refreshed. In Eclipse 3.7 and 3.8 you have to enable this yourself viaPreferences > General > Workspace and select Refresh on access. In Eclipse SDK 4.2 the mechanism is enabled by default.