Hi,
I have Zimbra Version 7.1.0_GA_3140 instaled on Ubuntu 10.04.2
Virtual machine is running on Vmware ESXI 4.1 and has 3 Gb of Ram and 2 Cpu-s .
Everything works perfect except file upload.
When i try to upload file that is 10 kb , it works , no problem . But if i try to upload a 500 kb file it waits for a long time and nothing happens.
Same thing is when i create new text document in zimbra and paste lot of text inside. When i try to save it it waits forever . If i just type few words file is saved , no problem.

I found error in mailbox.log and here it is :

2011-06-01 09:57:38,928 INFO [btpool0-14://mail.mydomain.com/service/upload?lbfums=] [name=john.doe@mydomain;mid=7;ip=192.168.xx.xx;ua=M ozilla/5.0 (Windows NT 6.1;; WOW64;; rv:2.0.1) Gecko/20100101 Firefox/4.0.1;] FileUploadServlet - File upload failed
org.apache.commons.fileupload.FileUploadBase$IOFil eUploadException: Processing of multipart/form-data request failed. null
at org.apache.commons.fileupload.FileUploadBase.parse Request(FileUploadBase.java:367)
at org.apache.commons.fileupload.servlet.ServletFileU pload.parseRequest(ServletFileUpload.java:126)
at com.zimbra.cs.service.FileUploadServlet.handleMult ipartUpload(FileUploadServlet.java:452)
at com.zimbra.cs.service.FileUploadServlet.doPost(Fil eUploadServlet.java:434)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:725)
at com.zimbra.cs.servlet.ZimbraServlet.service(Zimbra Servlet.java:208)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:814)
at org.mortbay.jetty.servlet.ServletHolder.handle(Ser vletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedCha in.doFilter(ServletHandler.java:1166)
at com.zimbra.cs.servlet.SetHeaderFilter.doFilter(Set HeaderFilter.java:79)
at org.mortbay.jetty.servlet.ServletHandler$CachedCha in.doFilter(ServletHandler.java:1157)
at org.mortbay.servlet.UserAgentFilter.doFilter(UserA gentFilter.java:81)
at org.mortbay.servlet.GzipFilter.doFilter(GzipFilter .java:132)
at org.mortbay.jetty.servlet.ServletHandler$CachedCha in.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(Se rvletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle( SecurityHandler.java:218)
at org.mortbay.jetty.servlet.SessionHandler.handle(Se ssionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(Co ntextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebA ppContext.java:422)
at org.mortbay.jetty.handler.ContextHandlerCollection .handle(ContextHandlerCollection.java:230)
at org.mortbay.jetty.handler.HandlerCollection.handle (HandlerCollection.java:114)
at org.mortbay.jetty.handler.HandlerWrapper.handle(Ha ndlerWrapper.java:152)
at org.mortbay.jetty.handler.rewrite.RewriteHandler.h andle(RewriteHandler.java:230)
at org.mortbay.jetty.handler.HandlerWrapper.handle(Ha ndlerWrapper.java:152)
at org.mortbay.jetty.handler.DebugHandler.handle(Debu gHandler.java:77)
at org.mortbay.jetty.handler.HandlerWrapper.handle(Ha ndlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(Htt pConnection.java:543)
at org.mortbay.jetty.HttpConnection$RequestHandler.co ntent(HttpConnection.java:946)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser. java:756)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpPa rser.java:218)
at org.mortbay.jetty.HttpConnection.handle(HttpConnec tion.java:405)
at org.mortbay.io.nio.SelectChannelEndPoint.run(Selec tChannelEndPoint.java:410)
at org.mortbay.thread.BoundedThreadPool$PoolThread.ru n(BoundedThreadPool.java:451)
Caused by: org.mortbay.jetty.EofException
at org.mortbay.jetty.HttpParser.parseNext(HttpParser. java:319)
at org.mortbay.jetty.HttpParser$Input.blockForContent (HttpParser.java:1176)
at org.mortbay.jetty.HttpParser$Input.read(HttpParser .java:1122)
at org.apache.commons.fileupload.MultipartStream$Item InputStream.makeAvailable(MultipartStream.java:977 )
at org.apache.commons.fileupload.MultipartStream$Item InputStream.read(MultipartStream.java:887)
at java.io.InputStream.read(InputStream.java:85)
at org.apache.commons.fileupload.util.Streams.copy(St reams.java:94)
at org.apache.commons.fileupload.util.Streams.copy(St reams.java:64)
at org.apache.commons.fileupload.FileUploadBase.parse Request(FileUploadBase.java:362)
... 33 more
Caused by: org.mortbay.jetty.EofException
at org.mortbay.jetty.security.SslHttpChannelEndPoint. unwrap(SslHttpChannelEndPoint.java:592)
at org.mortbay.jetty.security.SslHttpChannelEndPoint. fill(SslHttpChannelEndPoint.java:277)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser. java:290)

I cant figure out this myself so any help would be apprechiated