I just starting getting this error and it doesn't seem to want to go away. Any ideas of how to fix it? Do I need to delete the account and set it up again?

My web client works fine, it's just Zimbra Desktop that fails.

Code:
Debug message: resource unreachable: system failure native formatter failure

Exception:

com.zimbra.common.service.ServiceException: system failure: PushChanges.sync
ExceptionId:btpool0-6:1243052217239:14cbc1424669196f
Code:service.FAILURE
	at com.zimbra.common.service.ServiceException.FAILURE(ServiceException.java:253)
	at com.zimbra.cs.mailbox.SyncExceptionHandler.checkRecoverableException(SyncExceptionHandler.java:40)
	at com.zimbra.cs.mailbox.PushChanges.sync(PushChanges.java:373)
	at com.zimbra.cs.mailbox.PushChanges.sync(PushChanges.java:174)
	at com.zimbra.cs.mailbox.MailboxSync.sync(MailboxSync.java:189)
	at com.zimbra.cs.mailbox.OfflineMailbox.sync(OfflineMailbox.java:140)
	at com.zimbra.cs.service.offline.OfflineSync.handle(OfflineSync.java:47)
	at com.zimbra.soap.SoapEngine.dispatchRequest(SoapEngine.java:429)
	at com.zimbra.soap.SoapEngine.dispatch(SoapEngine.java:286)
	at com.zimbra.soap.SoapEngine.dispatch(SoapEngine.java:160)
	at com.zimbra.soap.SoapServlet.doPost(SoapServlet.java:269)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
	at com.zimbra.cs.servlet.ZimbraServlet.service(ZimbraServlet.java:190)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:716)
	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:406)
	at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:211)
	at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
	at org.mortbay.jetty.handler.RewriteHandler.handle(RewriteHandler.java:176)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139)
	at org.mortbay.jetty.Server.handle(Server.java:313)
	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:506)
	at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:844)
	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:644)
	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381)
	at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:396)
	at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:442)
Caused by: com.zimbra.common.service.ServiceException: resource unreachable: system failure native formatter failure
ExceptionId:btpool0-6:1243052217238:14cbc1424669196f
Code:service.RESOURCE_UNREACHABLE
	at com.zimbra.common.service.ServiceException.RESOURCE_UNREACHABLE(ServiceException.java:275)
	at com.zimbra.cs.service.UserServlet.doHttpOp(UserServlet.java:1447)
	at com.zimbra.cs.service.UserServlet.putMailItem(UserServlet.java:1369)
	at com.zimbra.cs.mailbox.OfflineMailbox.sendMailItem(OfflineMailbox.java:812)
	at com.zimbra.cs.mailbox.PushChanges.syncDocument(PushChanges.java:1069)
	at com.zimbra.cs.mailbox.PushChanges.sync(PushChanges.java:370)
	... 30 more