ExecuteThread for queue: 'weblogic.kernel.Default' stuck

Hello!
I have web application deployed on WebLogic 8.1 SP 4 cluster which is seriously loaded (~30 concurrent users) and periodically I get such messages wrote to log file:
<Apr 2, 2007 10:11:54 AM EDT> <Error> <WebLogicServer> <BEA-000337> <ExecuteThread: '51' for queue: 'weblogic.kernel.Default' has been busy for "233" seconds working on the request "Http Request: /myurl/some_jsp.jsp", which is more than the configured time (StuckThreadMaxTime) of "180" seconds.>
As far as I could find from BEA documentation these messages mean that some threads (it is ExecuteThread#51 here) are runned for too long time.
I've made a thread dump and found that for a few (10-15min) thread is doing the same work:
"ExecuteThread: '51' for queue: 'weblogic.kernel.Default'" daemon prio=1 tid=0x6ca004b8 nid=0x3094 runnable [0x6c9fe000..0x6c9ff868]
     at java.net.SocketOutputStream.socketWrite0(Native Method)
     at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
     at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
     at weblogic.servlet.internal.ChunkUtils.writeChunkNoTransfer(ChunkUtils.java:280)
     at weblogic.servlet.internal.ChunkUtils.writeChunks(ChunkUtils.java:241)
     at weblogic.servlet.internal.ChunkOutput.flush(ChunkOutput.java:311)
     at weblogic.servlet.internal.ChunkOutput.checkForFlush(ChunkOutput.java:387)
     at weblogic.servlet.internal.ChunkOutput.write(ChunkOutput.java:254)
     at weblogic.servlet.internal.MultibyteOutput.write(ChunkOutput.java:482)
     at weblogic.servlet.internal.ChunkOutputWrapper.write(ChunkOutputWrapper.java:125)
     at weblogic.servlet.jsp.JspWriterImpl.write(JspWriterImpl.java:455)
As you can see, thread is just writing to the socket for 10-15 minutes!!!
Can you help with some suggestions? Can this problem occure because of huge overloading to the server?
Thanks for all your responses.
Thanks

I have installed the Spring application on WebLogic 8.1 SP4 on Red HAt Linux 3.0.
These message doesn't appear for WebLogic 8.1 SP4 on windows.
2007-05-10 10:22:50,356 [l.Default'] DEBUG org.springframework.web.servlet.DispatcherServlet: Rendering view [org.springframework.web.servlet.view.JstlView: unnamed; URL [/util/noAccess.jsp]] in DispatcherServlet with name 'spring'
2007-05-10 10:22:50,376 [l.Default'] DEBUG org.springframework.web.servlet.DispatcherServlet: Could not complete request
java.net.SocketException: Connection reset
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:96)
at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
at weblogic.servlet.internal.ChunkUtils.writeChunkTransfer(ChunkUtils.java:267)
at weblogic.servlet.internal.ChunkUtils.writeChunks(ChunkUtils.java:239)
at weblogic.servlet.internal.ChunkOutput.flush(ChunkOutput.java:311)
at weblogic.servlet.internal.ChunkOutput.checkForFlush(ChunkOutput.java:387)
at weblogic.servlet.internal.ChunkOutput.write(ChunkOutput.java:254)
at weblogic.servlet.internal.ChunkOutputWrapper.write(ChunkOutputWrapper.java:125)
at weblogic.servlet.jsp.JspWriterImpl.write(JspWriterImpl.java:455)
at jsp_servlet._util.__noaccess._writeText(__noaccess.java:74)
at jsp_servlet._util.__noaccess._jspService(__noaccess.java:283)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1006)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:315)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:322)
at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:111)
at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:965)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:744)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:663)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:394)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:348)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1006)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:315)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:322)
at weblogic.servlet.internal.ServletResponseImpl.sendError(ServletResponseImpl.java:531)
at weblogic.servlet.internal.ServletResponseImpl.sendError(ServletResponseImpl.java:383)
at weblogic.servlet.FileServlet.findSource(FileServlet.java:281)
at weblogic.servlet.FileServlet.service(FileServlet.java:184)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1006)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:315)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6718)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3764)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2644)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:219)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:178)

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    Pete

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