jetty-maven-plugin overlay or reload issue

when running the cometd-demo with mvn jetty:run, if a redeploy is triggered by doing a mvn install in cometd-javascript, the following exception is frequently generated:

[INFO] Webapp directory = /home/gregw/src/cometd/cometd-demo/src/main/webapp
2009-05-15 10:23:57.209::WARN: EXCEPTION
java.io.FileNotFoundException: JAR entry WEB-INF/classes/org/dojotoolkit/DojoFilter.class not found in /home/gregw/.m2/repository/org/cometd/javascript/cometd-javascript-dojo/1.0.beta9-SNAPSHOT/cometd-javascript-dojo-1.0.beta9-SNAPSHOT.war
at sun.net.www.protocol.jar.JarURLConnection.connect(JarURLConnection.java:122)
at sun.net.www.protocol.jar.JarURLConnection.getInputStream(JarURLConnection.java:132)
at java.net.URL.openStream(URL.java:1009)
at org.eclipse.jetty.annotations.AnnotationFinder.find(AnnotationFinder.java:566)
at org.eclipse.jetty.annotations.AnnotationFinder.find(AnnotationFinder.java:557)
at org.eclipse.jetty.annotations.AnnotationFinder.find(AnnotationFinder.java:557)
at org.eclipse.jetty.annotations.Configuration.parseAnnotations(Configuration.java:111)
at org.mortbay.jetty.plugin.JettyMavenConfiguration.parseAnnotations(JettyMavenConfiguration.java:118)
at org.eclipse.jetty.plus.webapp.AbstractConfiguration.configure(AbstractConfiguration.java:120)
at org.eclipse.jetty.webapp.WebXmlConfiguration.configureWebApp(WebXmlConfiguration.java:233)
at org.eclipse.jetty.plus.webapp.AbstractConfiguration.configureWebApp(AbstractConfiguration.java:97)
at org.eclipse.jetty.plus.webapp.Configuration.configureWebApp(Configuration.java:147)
at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1213)
at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:551)
at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:350)
at org.mortbay.jetty.plugin.JettyWebAppContext.doStart(JettyWebAppContext.java:107)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:55)
at org.mortbay.jetty.plugin.JettyRunMojo.restartWebApp(JettyRunMojo.java:476)
at org.mortbay.jetty.plugin.JettyRunMojo$1.filesChanged(JettyRunMojo.java:437)
at org.eclipse.jetty.util.Scanner.reportBulkChanges(Scanner.java:485)
at org.eclipse.jetty.util.Scanner.reportDifferences(Scanner.java:351)
at org.eclipse.jetty.util.Scanner.scan(Scanner.java:279)
at org.eclipse.jetty.util.Scanner$1.run(Scanner.java:231)
at java.util.TimerThread.mainLoop(Timer.java:512)
at java.util.TimerThread.run(Timer.java:462)