I was deploying my sar in the unpackaged form, like the jbossweb.sar directory. Deployment works fine.
The problem I hit with re-deployment (that is deleting the directory and copying it over again) is that messages appear in the jboss log, so you think it is doing a redployment, but it restarts the old code, not a new version. I was changing the log messages from the code and the old ones kept being displayed.
But it works fine if I deploy as a packaged sar file.
Is this a known problem?
I haven't heard of it. Please file it as a bug to SF. If someone knows bout it they will comment on it.