Weird crashed after about 7-10 days

Hey all!

I am running openfire-3.7.0,1 on FreeBSD 8.1. Its working for months now, but every 5-10 days the server stops working. Visiting the admin console yields this error:

Exception: java.util.MissingResourceException: Can't find bundle for base name openfire_i18n, locale en
    at java.util.ResourceBundle.throwMissingResourceException(ResourceBundle.java:1508)
    at java.util.ResourceBundle.getBundleImpl(ResourceBundle.java:1262)
    at java.util.ResourceBundle.getBundle(ResourceBundle.java:789)
    at org.jivesoftware.util.LocaleUtils.getLocalizedString(LocaleUtils.java:409)
    at org.jivesoftware.util.LocaleUtils.getLocalizedString(LocaleUtils.java:471)
    at org.jivesoftware.util.LocaleUtils.getLocalizedString(LocaleUtils.java:440)
    at org.jivesoftware.util.LocaleUtils.getLocalizedString(LocaleUtils.java:424)
    at org.jivesoftware.admin.AdminConsole.getAdminText(AdminConsole.java:239)
    at org.jivesoftware.admin.AdminConsole.getAppName(AdminConsole.java:140)
    at org.jivesoftware.openfire.admin.login_jsp._jspService(login_jsp.java:211)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
    at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:530)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1216)
    at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:39)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1187)
    at org.jivesoftware.util.LocaleFilter.doFilter(LocaleFilter.java:74)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1187)
    at org.jivesoftware.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:50)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1187)
    at org.jivesoftware.admin.PluginFilter.doFilter(PluginFilter.java:78)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1187)
    at org.jivesoftware.admin.AuthCheckFilter.doFilter(AuthCheckFilter.java:164)
    at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1187)
    at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:425)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
    at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:494)
    at org.eclipse.jetty.server.session.SessionHandler.handle(SessionHandler.java:182)
    at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:933)
    at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:362)
    at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:867)
    at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
    at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:245)
    at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:126)
    at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:113)
    at org.eclipse.jetty.server.Server.handle(Server.java:334)
    at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:559)
    at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:992)
    at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:541)
    at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:203)
    at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:406)
    at org.eclipse.jetty.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:462)
    at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:436)
    at java.lang.Thread.run(Thread.java:619)

I am not a java guru, but as far as I can tell it cant load the i18n libs, bundled with openfire. Or so.

Anyone got a better grip on the issue? The weird thing is: It does work for days, then this.

-Chris.