After upgrading my Eclipse installation to Luna (from Kepler), my JBoss servers started being overly pedantic with the redeployment of my web projects: even if I change a JavaScript file, a deployment replacement begins and takes significant amount of time. The same happens for JSP files too.
I've set Publishing to Automatically publish when resources change (as it was in Kepler), I've deleted/added JBoss 7.0 several times, tried various combinations of the checkboxes in Deployment Scanners & Application Reload Behavior, the issue persists though.
Configuration:
After searching further, I found that this was a bug in the beta 2 version of JBoss Tools 4.2 for Luna.
As answered here, beta 3 of JBoss Tools fixes this issue.