diff -aur apache-log4cxx-0.10.0.orig/src/main/cpp/socketappenderskeleton.cpp apache-log4cxx-0.10.0.new/src/main/cpp/socketappenderskeleton.cpp
--- apache-log4cxx-0.10.0.orig/src/main/cpp/socketappenderskeleton.cpp	2008-04-01 00:34:09.000000000 +0200
+++ apache-log4cxx-0.10.0.new/src/main/cpp/socketappenderskeleton.cpp	2011-05-19 18:11:47.293896800 +0200
@@ -28,7 +28,6 @@
 #include <log4cxx/helpers/transcoder.h>
 #include <log4cxx/helpers/bytearrayoutputstream.h>
 
-
 using namespace log4cxx;
 using namespace log4cxx::helpers;
 using namespace log4cxx::net;
@@ -130,8 +129,13 @@
 void SocketAppenderSkeleton::fireConnector()
 {
         synchronized sync(mutex);
-        if (thread.isActive()) {
-                thread.run(monitor, this);
+        if ( !thread.isAlive() ) {
+             LogLog::debug(LOG4CXX_STR( "Connector thread not alive: starting monitor."));
+             try {
+                  thread.run(monitor, this);
+             } catch( ThreadException& te ) {
+                  LogLog::error(LOG4CXX_STR("Monitor not started: "), te );
+             }
         }
 }
 
diff -aur apache-log4cxx-0.10.0.orig/src/main/cpp/threadcxx.cpp apache-log4cxx-0.10.0.new/src/main/cpp/threadcxx.cpp
--- apache-log4cxx-0.10.0.orig/src/main/cpp/threadcxx.cpp	2008-04-01 00:34:09.000000000 +0200
+++ apache-log4cxx-0.10.0.new/src/main/cpp/threadcxx.cpp	2011-05-19 18:10:05.422074536 +0200
@@ -57,6 +57,11 @@
 
 void Thread::run(Runnable start, void* data) {
 #if APR_HAS_THREADS
+        // Try to join first if previous instance did exit
+        if ( isActive() && !isAlive() ) {
+             join();
+        }
+        // now we're ready to create the thread again
         //
         //    if attempting a second run method on the same Thread object
         //         throw an exception
@@ -77,6 +82,9 @@
         if (stat != APR_SUCCESS) {
                 throw ThreadException(stat);
         }
+	// we need to set alive here already, since we use isAlive() to check
+	// if run() has been called in a thread-safe way.
+	apr_atomic_set32(&alive, 0xFFFFFFFF);
 #else
         throw ThreadException(LOG4CXX_STR("APR_HAS_THREADS is not true"));
 #endif
@@ -96,10 +104,12 @@
     LaunchPackage* package = (LaunchPackage*) data;
     ThreadLocal& tls = getThreadLocal();
     tls.set(package->getThread());
-    LaunchStatus alive(&package->getThread()->alive);
-    void* retval = (package->getRunnable())(thread, package->getData());
-    apr_thread_exit(thread, 0);
-    return retval;
+    {
+      (package->getRunnable())(thread, package->getData());
+      package->getThread()->ending();
+    }
+    apr_thread_exit(thread, 0); // this function never returns !
+    return 0;
 }
 #endif