Normally you dont have to adjust anything in your JBoss,
Eclipse seems to be the problem.
You tried to remove (delete) all your breakpoints and reset the needed?
This sometimes causes my debug become slow.
what you mean break point in debug perspective console?
i remove all that. now i use time on debug about 9 minute,
I think, It's slow more than version 4.2.2,4.2.3.