I installed the netbeans-6.0m9-full-linux.sh release in my home directory successfully and everything worked ok using
the "/h/jkerich/netbeans-6.0m9/bin/netbeans --jdkhome /opt/jdk1.6.0 &" on the command line.  The admin then installed
netbeans in the /opt directory so everyone could use it.  I then deleted all the netbean directories that I could find
in my home directory (there seams to be no uninstall option with netbeans-6.0m9-full-linux.sh) and then tried to start
up the /opt/netbeans using "/opt/netbeans-6.0m9/bin/netbeans --jdkhome /opt/jdk1.6.0  &" on the command line in my home
directory.  The following exception happened as it was starting:

java.io.IOException: could not run [/bin/chmod, u+rx, gem_server, jrubyc, index_gem_repository.rb, rails, rake,
update_rubygems, gemri, gem, generate_yaml_index.rb, rdoc, testrb, jruby, jirb, gemlock, jruby.rb, gemwhich, gem_mirror]
	at org.netbeans.api.ruby.platform.RubyInstallation.ensureExecutable(RubyInstallation.java:746)
	at org.netbeans.modules.ruby.rubyproject.RubyProjectModuleInstaller.restored(RubyProjectModuleInstaller.java:40)
	at org.netbeans.core.startup.NbInstaller.loadCode(NbInstaller.java:354)
	at org.netbeans.core.startup.NbInstaller.load(NbInstaller.java:273)
	at org.netbeans.ModuleManager.enable(ModuleManager.java:903)
	at org.netbeans.core.startup.ModuleList.installNew(ModuleList.java:380)
	at org.netbeans.core.startup.ModuleList.trigger(ModuleList.java:316)
	at org.netbeans.core.startup.ModuleSystem.restore(ModuleSystem.java:260)
	at org.netbeans.core.startup.Main.getModuleSystem(Main.java:149)
	at org.netbeans.core.startup.Main.start(Main.java:300)
	at org.netbeans.core.startup.TopThreadGroup.run(TopThreadGroup.java:88)
[catch] at java.lang.Thread.run(Thread.java:619)

java.lang.IllegalArgumentException: port out of range:-3894
	at java.net.InetSocketAddress.<init>(InetSocketAddress.java:118)
	at org.netbeans.modules.j2ee.sun.ide.j2ee.ui.DomainCreator.isPortAvaibale(DomainCreator.java:239)
	at org.netbeans.modules.j2ee.sun.ide.j2ee.ui.DomainCreator.createPersonalDomain(DomainCreator.java:163)
	at org.netbeans.modules.j2ee.sun.ide.j2ee.ui.DomainCreator.createPersonalDefaultDomain(DomainCreator.java:101)
	at org.netbeans.modules.j2ee.sun.ide.Installer.createDomainAndRecord(Installer.java:80)
	at org.netbeans.modules.j2ee.sun.ide.Installer.access$100(Installer.java:32)
	at org.netbeans.modules.j2ee.sun.ide.Installer$PrepareEnvironment.run(Installer.java:70)
[catch] at org.netbeans.core.windows.WindowManagerImpl$Exclusive.run(WindowManagerImpl.java:1252)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)

There was a note saying the following: 
A java.lang.IllegalArgumentException exception has occurred.
However, the system should continue working without further problems.
Click Show Details for the stack trace

It looks like there might be a ownership problem on one of the directories but I don't see what the chmod is being done
on or whether this is a path problem.  Any idea?