Full thread dump Java HotSpot(TM) Client VM (1.4.0-b92 mixed mode):

"RMI TCP Connection(7)-129.156.75.139" daemon prio=5 tid=0x137078 nid=0x18 runnable [f127f000..f12819c0]
        at java.net.SocketInputStream.socketRead0(Native Method)
        at java.net.SocketInputStream.read(SocketInputStream.java:116)
        at java.io.BufferedInputStream.fill(BufferedInputStream.java:183)
        at java.io.BufferedInputStream.read1(BufferedInputStream.java:222)
        at java.io.BufferedInputStream.read(BufferedInputStream.java:277)
        - locked <f2775438> (a java.io.BufferedInputStream)
        at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:721)
        at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:682)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:565)
        - locked <f276eca8> (a sun.net.www.protocol.http.HttpURLConnection)
        at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:1144)
        at sun.net.www.protocol.http.HttpURLConnection.getResponseCode(HttpURLConnection.java:1158)
        at sun.misc.URLClassPath$Loader.getResource(URLClassPath.java:399)
        at sun.misc.URLClassPath.getResource(URLClassPath.java:135)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:190)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:186)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        - locked <f2767c20> (a sun.rmi.server.LoaderHandler$Loader)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:262)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:322)
        - locked <f2767c20> (a sun.rmi.server.LoaderHandler$Loader)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:207)
        at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:427)
        at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:159)
        at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:629)
        at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:257)
        at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:200)
        at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1503)
        at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1425)
        at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1616)
        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1264)
        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:322)
        at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknown Source)
        at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:342)
        at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:207)
        at sun.rmi.transport.Transport$1.run(Transport.java:148)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
        at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
        at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:701)
        at java.lang.Thread.run(Thread.java:536)

"RMI RenewClean-[129.156.75.139:40174]" daemon prio=5 tid=0x286c78 nid=0x14 waiting on monitor [f1181000..f11819c0]
        at java.lang.Object.wait(Native Method)
        - waiting on <f2769100> (a java.lang.ref.ReferenceQueue$Lock)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:111)
        - locked <f2769100> (a java.lang.ref.ReferenceQueue$Lock)
        at sun.rmi.transport.DGCClient$EndpointEntry$RenewCleanThread.run(DGCClient.java:500)
        at java.lang.Thread.run(Thread.java:536)

"RMI TCP Accept-1099" daemon prio=5 tid=0x135d70 nid=0xc runnable [f1c81000..f1c819c0]
        at java.net.PlainSocketImpl.socketAccept(Native Method)
        at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:343)
        - locked <f272d860> (a java.net.PlainSocketImpl)
        at java.net.ServerSocket.implAccept(ServerSocket.java:438)
        at java.net.ServerSocket.accept(ServerSocket.java:409)
        at sun.rmi.transport.tcp.TCPTransport.run(TCPTransport.java:334)
        at java.lang.Thread.run(Thread.java:536)

"Thread-1" daemon prio=5 tid=0x10b0f8 nid=0xb waiting on monitor [f1d81000..f1d819c0]
        at java.lang.Object.wait(Native Method)
        - waiting on <f272cf60> (a java.util.TaskQueue)
        at java.util.TimerThread.mainLoop(Timer.java:429)
        - locked <f272cf60> (a java.util.TaskQueue)
        at java.util.TimerThread.run(Timer.java:382)

"Signal Dispatcher" daemon prio=10 tid=0xa39d0 nid=0x9 runnable [0..0]

"Finalizer" daemon prio=8 tid=0x9f008 nid=0x6 waiting on monitor [fa381000..fa3819c0]
        at java.lang.Object.wait(Native Method)
        - waiting on <f2710398> (a java.lang.ref.ReferenceQueue$Lock)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:111)
        - locked <f2710398> (a java.lang.ref.ReferenceQueue$Lock)
        at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:127)
        at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)

"Reference Handler" daemon prio=10 tid=0x9e610 nid=0x5 waiting on monitor [fdf81000..fdf819c0]
        at java.lang.Object.wait(Native Method)
        - waiting on <f27102c0> (a java.lang.ref.Reference$Lock)
        at java.lang.Object.wait(Object.java:426)
        at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:113)
        - locked <f27102c0> (a java.lang.ref.Reference$Lock)

"main" prio=5 tid=0x29ad0 nid=0x1 waiting on monitor [ffbed000..ffbede30]
        at java.lang.Thread.sleep(Native Method)
        at sun.rmi.registry.RegistryImpl.main(RegistryImpl.java:321)

"VM Thread" prio=5 tid=0x9d230 nid=0x4 runnable 

"VM Periodic Task Thread" prio=10 tid=0xa2710 nid=0x7 waiting on monitor 
"Suspend Checker Thread" prio=10 tid=0xa3070 nid=0x8 runnable