threads and security exceptions

[Dave]

When trying to create a thread I get a security access exception in my
applet using the plugin and only when using the plugin. IEs VM gives
me no problems.

java.security.AccessControlException: access denied
(java.lang.RuntimePermission modifyThreadGroup)
at java.security.AccessControlContext.checkPermission(Unknown Source)
at java.security.AccessController.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at sun.applet.AppletSecurity.checkAccess(Unknown Source)
at java.lang.ThreadGroup.checkAccess(Unknown Source)
at java.lang.Thread.init(Unknown Source)
at java.lang.Thread.<init>(Unknown Source)
at kiaobjects.eventobject.ClickCountingThread.<init>KiaEventLinker.java:263)
at kiaobjects.eventobject.KiaEventLinker.<init>(KiaEventLinker.java:24)
at kiaobjects.simulator.KiaSimulator.<init>(KiaSimulator.java:11)
at kiaobjects.simulator.IDEaSimulator.<init>(IDEaSimulator.java:39)
at java.lang.Class.newInstance0(Native Method)

This only occurs whten the classpath is set (the application calls the
applet so the classpath set).