Can not forward a request to HipChat API

We don't have HipChat plugin in stalled. Why am I seeing these errors in my atlassian-jira.log files.

2013-09-25 11:51:22,988 ajp-bio-20120-exec-639 ERROR ZKG7U5I 711x429358x2 9l4fre 171.165.118.166 /plugins/servlet/hipchatproxy/v1/users/show [atlassian.plugin.servlet.ServletModuleContainerServlet] Can not forward a request to HipChat API
javax.servlet.ServletException: Can not forward a request to HipChat API
at com.atlassian.labs.proxy.HipChatApiProxyServlet.service(HipChatApiProxyServlet.java:114)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at com.atlassian.plugin.servlet.DelegatingPluginServlet.service(DelegatingPluginServlet.java:42)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at com.atlassian.plugin.servlet.ServletModuleContainerServlet.service(ServletModuleContainerServlet.java:52)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) <+14> (ApplicationFilterChain.java:305) (ApplicationFilterChain.java:210) (ChainedFilterStepRunner.java:84) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (XContentTypeOptionsNoSniffFilter.java:22) (AbstractHttpFilter.java:31) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (HeaderSanitisingFilter.java:44) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (IteratingFilterChain.java:46) (DelegatingPluginFilter.java:66)
at com.atlassian.jira.tzdetect.IncludeResourcesFilter.doFilter(IncludeResourcesFilter.java:39) <+3> (DelegatingPluginFilter.java:74) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:66)
at com.atlassian.jira.baseurl.IncludeResourcesFilter.doFilter(IncludeResourcesFilter.java:38) <+8> (AbstractHttpFilter.java:31) (DelegatingPluginFilter.java:74) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:66) (ContextFilter.java:25) (DelegatingPluginFilter.java:74) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:66)
at com.atlassian.mywork.client.filter.ServingRequestsFilter.doFilter(ServingRequestsFilter.java:37) <+3> (DelegatingPluginFilter.java:74) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:66)
at com.atlassian.prettyurls.filter.PrettyUrlsDispatcherFilter.doFilter(PrettyUrlsDispatcherFilter.java:60) <+3> (DelegatingPluginFilter.java:74) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:66)
at com.atlassian.prettyurls.filter.PrettyUrlsSiteMeshFilter.doFilter(PrettyUrlsSiteMeshFilter.java:92) <+3> (DelegatingPluginFilter.java:74) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:66)
at com.atlassian.prettyurls.filter.PrettyUrlsMatcherFilter.doFilter(PrettyUrlsMatcherFilter.java:56) <+3> (DelegatingPluginFilter.java:74) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:66)
at com.atlassian.labs.botkiller.BotKillerFilter.doFilter(BotKillerFilter.java:36) <+20> (DelegatingPluginFilter.java:74) (IteratingFilterChain.java:42) (ServletFilterModuleContainerFilter.java:77) (ServletFilterModuleContainerFilter.java:63) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (AccessLogFilter.java:103) (AccessLogFilter.java:87) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (XsrfTokenAdditionRequestFilter.java:54) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (SiteMeshFilter.java:129) (SiteMeshFilter.java:77) (SitemeshPageFilter.java:124) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (IteratingFilterChain.java:46) (DelegatingPluginFilter.java:66)
at com.atlassian.plugin.remotable.plugin.module.permission.ApiScopingFilter.doFilter(ApiScopingFilter.java:62) <+3> (DelegatingPluginFilter.java:74) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:66)
at com.atlassian.prettyurls.filter.PrettyUrlsCombinedMatchDispatcherFilter.doFilter(PrettyUrlsCombinedMatchDispatcherFilter.java:61) <+22> (DelegatingPluginFilter.java:74) (IteratingFilterChain.java:42) (ServletFilterModuleContainerFilter.java:77) (ServletFilterModuleContainerFilter.java:63) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (SecurityFilter.java:234) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (TrustedApplicationsFilter.java:98) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (BaseLoginFilter.java:169) (JiraLoginFilter.java:70) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (IteratingFilterChain.java:46) (DelegatingPluginFilter.java:66) (OAuthFilter.java:55) (DelegatingPluginFilter.java:74) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:66)
at com.atlassian.prettyurls.filter.PrettyUrlsCombinedMatchDispatcherFilter.doFilter(PrettyUrlsCombinedMatchDispatcherFilter.java:61) <+13> (DelegatingPluginFilter.java:74) (IteratingFilterChain.java:42) (ServletFilterModuleContainerFilter.java:77) (ServletFilterModuleContainerFilter.java:63) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (ProfilingFilter.java:99) (JIRAProfilingFilter.java:19) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (AbstractJohnsonFilter.java:71) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210)
at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176)
at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)
at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) <+9> (UrlRewriteFilter.java:394) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (GzipFilter.java:80) (GzipFilter.java:51) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (IteratingFilterChain.java:46) (DelegatingPluginFilter.java:66)
at com.atlassian.plugin.remotable.plugin.module.oauth.OAuth2LOFilter.doFilter(OAuth2LOFilter.java:70) <+3> (DelegatingPluginFilter.java:74) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:66)
at com.atlassian.plugin.remotable.host.common.service.http.bigpipe.BigPipeRequestIdFilter.doFilter(BigPipeRequestIdFilter.java:33) <+3> (DelegatingPluginFilter.java:74) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:66)
at com.atlassian.prettyurls.filter.PrettyUrlsCombinedMatchDispatcherFilter.doFilter(PrettyUrlsCombinedMatchDispatcherFilter.java:61) <+41> (DelegatingPluginFilter.java:74) (IteratingFilterChain.java:42) (DelegatingPluginFilter.java:66) (JWDSendRedirectFilter.java:25) (DelegatingPluginFilter.java:74) (IteratingFilterChain.java:42) (ServletFilterModuleContainerFilter.java:77) (ServletFilterModuleContainerFilter.java:63) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (ChainedFilterStepRunner.java:84) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (AbstractCachingFilter.java:33) (AbstractHttpFilter.java:31) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (AbstractEncodingFilter.java:41) (AbstractHttpFilter.java:31) (PathMatchingEncodingFilter.java:49) (AbstractHttpFilter.java:31) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (JiraStartupChecklistFilter.java:74) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (ChainedFilterStepRunner.java:84) (JiraFirstFilter.java:57) (ApplicationFilterChain.java:243) (ApplicationFilterChain.java:210) (StandardWrapperValve.java:222) (StandardContextValve.java:123) (AuthenticatorBase.java:472) (StandardHostValve.java:171) (ErrorReportValve.java:99) (AccessLogValve.java:931) (StandardEngineValve.java:118) (CoyoteAdapter.java:407) (AjpProcessor.java:200) (AbstractProtocol.java:589) (JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:722)
Caused by: com.atlassian.sal.api.net.ResponseException: java.net.UnknownHostException: api.hipchat.com
at com.atlassian.sal.core.net.HttpClientRequest.executeAndReturn(HttpClientRequest.java:361)
at com.atlassian.plugins.rest.module.jersey.JerseyRequest.executeAndReturn(JerseyRequest.java:161)
at com.atlassian.plugins.rest.module.jersey.JerseyRequest.execute(JerseyRequest.java:141)
at sun.reflect.GeneratedMethodAccessor2688.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at com.atlassian.plugins.rest.module.ContextClassLoaderSwitchingProxy.invoke(ContextClassLoaderSwitchingProxy.java:27)
at com.sun.proxy.$Proxy2044.execute(Unknown Source)
at com.atlassian.labs.proxy.HipChatApiProxyServlet.service(HipChatApiProxyServlet.java:112)
... 175 more
Caused by: java.net.UnknownHostException: api.hipchat.com
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:178)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391)
at java.net.Socket.connect(Socket.java:579)
at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:618)
at sun.security.ssl.SSLSocketImpl.<init>(SSLSocketImpl.java:451)
at org.apache.commons.httpclient.protocol.SSLProtocolSocketFactory.createSocket(SSLProtocolSocketFactory.java:81)
at com.atlassian.sal.core.net.CustomSSLProtocolSocketFactory.createSocket(CustomSSLProtocolSocketFactory.java:56)
at org.apache.commons.httpclient.protocol.ControllerThreadSocketFactory$1.doit(ControllerThreadSocketFactory.java:90)
at org.apache.commons.httpclient.protocol.ControllerThreadSocketFactory$SocketTask.run(ControllerThreadSocketFactory.java:157)
... 1 more