See relevant discussion here:
Logging added in e92edc1d7133
Created attachment 74543 [details]
grep for suspect classes
the suspect list shows that this is a pervasive coding error, not confined to the server integration modules... so ide
is the correct component.
In most cases overriding of java.awt.Component.isValid() is incorrect in NB code base.
Possible incorrect usages:
1.Simple override from uknown reason probably left from following cases. Not used anywhere but in java.awt.Component.
Delete this overrides.
2.Class extends java.awt.Component and implements WizardDescriptor.Panel. Split it.
3.Class extends java.awt.Component and implements org.netbeans.spi.debugger.ui.Controller. It was fixed in issue #158192
and changeset http://hg.netbeans.org/main/rev/39b9fb269554
*** Issue 158623 has been marked as a duplicate of this issue. ***
all issues have already been addressed in current trunk (6.7) and are prepared for NetBeans 6.5.1 release, for more
details see http://wiki.netbeans.org/NetBeans651