Question/Problem:
JB6 does not work with duo monitor.

I added the line vmparam -Dsun.java2d.pmoffscreen=false

in both JBuilder.config and jdk.config for JB6 and it still does not work.

However, JB4 works with my duo monitor set up. What's the work around for
JB6?

Answer:
This isn't a JBuilder issue, it's a JVM issue.  JB4 used IBM's 1.3.0,
but JB6 is using Sun's 1.3.0_02.  I'd check Sun's Bug Parade and see if you
can find a reference to dual monitor bugs.  Perhaps they've been fixed in
a later release of 1.3.0, or in 1.3.1.  Or  you can try running JB6 on
IBM's most recent 1.3.0.

Edit JBuilder6/bin/jdk.config appropriately.  (Make a backup copy, and don't
erase the bundled JVM.)