Index: java/org/apache/tomcat/util/net/AprEndpoint.java
===================================================================
--- java/org/apache/tomcat/util/net/AprEndpoint.java	(revision 1036389)
+++ java/org/apache/tomcat/util/net/AprEndpoint.java	(working copy)
@@ -912,6 +912,7 @@
      */
     protected class Acceptor extends Thread {
 
+        private final Log log = LogFactory.getLog(AprEndpoint.Acceptor.class);
 
         /**
          * The background thread that listens for incoming TCP/IP connections and
@@ -954,7 +955,22 @@
                     }
                 } catch (Throwable t) {
                     ExceptionUtils.handleThrowable(t);
-                    if (running) log.error(sm.getString("endpoint.accept.fail"), t);
+                    if (running) {
+                        String msg = sm.getString("endpoint.accept.fail");
+                        if (t instanceof Error) {
+                            Error e = (Error) t;
+                            if (e.getError() == 233) {
+                                // Not an error on HP-UX so log as a warning
+                                // so it can be filtered out on that platform
+                                // See bug 50773
+                                log.warn(msg, t);
+                            } else {
+                                log.error(msg, t);
+                            }
+                        } else {
+                                log.error(msg, t);
+                        }
+                    }
                 }
 
                 // The processor will recycle itself when it finishes