Hi

I believe there is a bug when deploying exploded WAR project using JBoss 4.x app server connector.
What occurs (especially on LARGE projects) is that JBoss starts deploying <project>.war folder before MyEclipseIDE is finished copying contents into it.

Due this mis-synchronization a project will fail to deploy on JBoss because not all classes, libraries and other resources are done copying when deployment occurs.

WORKAROUND:
Defaul deployment scanning interval in JBoss is 5000 mils (5 seconds)...This can be increased in conf/jboss-service.xml. This seem to help but occasionally problem still occurs.

PROPOSED FIX:
Have ME use tmp folder on initial deployment (with the name that JBoss ignores) and then rename it to <context>.war to avoid issues with large projects.

This is why we suggest not deploying to a running app server, but your proposed fix is a good idea, I'll pitch it to the team. Thanks for reporting it.