Index: /trunk/src/VBox/Runtime/r3/init.cpp
===================================================================
--- /trunk/src/VBox/Runtime/r3/init.cpp	(revision 23891)
+++ /trunk/src/VBox/Runtime/r3/init.cpp	(revision 23892)
@@ -42,7 +42,4 @@
 # ifndef RT_OS_OS2
 #  include <pthread.h>
-#  include <signal.h>
-#  include <errno.h>
-#  define IPRT_USE_SIG_CHILD_DUMMY
 # endif
 #endif
@@ -207,19 +204,4 @@
 }
 
-
-#ifdef IPRT_USE_SIG_CHILD_DUMMY
-/**
- * Dummy SIGCHILD handler.
- *
- * Assigned on rtR3Init only when SIGCHILD handler is set SIGIGN or SIGDEF to
- * ensure waitpid works properly for the terminated processes.
- */
-static void rtR3SigChildHandler(int iSignal)
-{
-    NOREF(iSignal);
-}
-#endif /* IPRT_USE_SIG_CHILD_DUMMY */
-
-
 /**
  * rtR3Init worker.
@@ -314,39 +296,4 @@
     atexit(rtR3ExitCallback);
 
-#ifdef IPRT_USE_SIG_CHILD_DUMMY
-    /*
-     * SIGCHLD must not be ignored (that's default), otherwise posix compliant waitpid
-     * implementations won't work right.
-     */
-    for (;;)
-    {
-        struct sigaction saOld;
-        rc = sigaction(SIGCHLD, 0, &saOld);         AssertMsg(rc == 0, ("%d/%d\n", rc, errno));
-        if (    rc != 0
-            ||  (saOld.sa_flags & SA_SIGINFO)
-            || (   saOld.sa_handler != SIG_IGN
-                && saOld.sa_handler != SIG_DFL)
-           )
-            break;
-
-        /* Try install dummy handler. */
-        struct sigaction saNew = saOld;
-        saNew.sa_flags   = SA_NOCLDSTOP | SA_RESTART;
-        saNew.sa_handler = rtR3SigChildHandler;
-        rc = sigemptyset(&saNew.sa_mask);           AssertMsg(rc == 0, ("%d/%d\n", rc, errno));
-        struct sigaction saOld2;
-        rc = sigaction(SIGCHLD, &saNew, &saOld2);   AssertMsg(rc == 0, ("%d/%d\n", rc, errno));
-        if (    rc != 0
-            ||  (   saOld2.sa_handler == saOld.sa_handler
-                 && !(saOld2.sa_flags & SA_SIGINFO))
-           )
-            break;
-
-        /* Race during dynamic load, restore and try again... */
-        sigaction(SIGCHLD, &saOld2, NULL);
-        RTThreadYield();
-    }
-#endif /* IPRT_USE_SIG_CHILD_DUMMY */
-
 #ifdef IPRT_WITH_ALIGNMENT_CHECKS
     /*
Index: /trunk/src/VBox/Runtime/r3/posix/process-posix.cpp
===================================================================
--- /trunk/src/VBox/Runtime/r3/posix/process-posix.cpp	(revision 23891)
+++ /trunk/src/VBox/Runtime/r3/posix/process-posix.cpp	(revision 23892)
@@ -110,9 +110,4 @@
     /*
      * Spawn the child.
-     *
-     * HACK ALERT! Put the process into a new process group with pgid = pid
-     * to make sure it differs from that of the parent process to ensure that
-     * the IPRT waipit call doesn't race anyone (read XPCOM) doing group wide
-     * waits.
      */
     pid_t pid;
@@ -120,33 +115,12 @@
     if (!(fFlags & RTPROC_FLAGS_DAEMONIZE))
     {
-        posix_spawnattr_t Attr;
-
-        rc = posix_spawnattr_init(&Attr);
+        /** @todo check if it requires any of those two attributes, don't remember atm. */
+        rc = posix_spawn(&pid, pszExec, NULL, NULL, (char * const *)papszArgs,
+                         (char * const *)papszEnv);
         if (!rc)
         {
-# ifndef RT_OS_OS2 /* We don't need this on OS/2 and I don't recall if it's actually implemented. */
-            rc = posix_spawnattr_setflags(&Attr, POSIX_SPAWN_SETPGROUP);
-            Assert(rc == 0);
-            if (!rc)
-            {
-                rc = posix_spawnattr_setpgroup(&Attr, 0 /* pg == child pid */);
-                Assert(rc == 0);
-            }
-# endif
-            if (!rc)
-            {
-                /** @todo check if it requires any mandatory attributes or something, don't
-                 *        remember atm. */
-                rc = posix_spawn(&pid, pszExec, NULL, &Attr, (char * const *)papszArgs,
-                                 (char * const *)papszEnv);
-                if (!rc)
-                {
-                    int rc2 = posix_spawnattr_destroy(&Attr); Assert(rc2 == 0); NOREF(rc2);
-                    if (pProcess)
-                        *pProcess = pid;
-                    return VINF_SUCCESS;
-                }
-            }
-            int rc2 = posix_spawnattr_destroy(&Attr); Assert(rc2 == 0); NOREF(rc2);
+            if (pProcess)
+                *pProcess = pid;
+            return VINF_SUCCESS;
         }
     }
@@ -157,6 +131,4 @@
         if (!pid)
         {
-            setpgid(0, 0); /* see comment above */
-
             if (fFlags & RTPROC_FLAGS_DAEMONIZE)
             {
Index: /trunk/src/libs/xpcom18a4/nsprpub/pr/src/md/unix/uxproces.c
===================================================================
--- /trunk/src/libs/xpcom18a4/nsprpub/pr/src/md/unix/uxproces.c	(revision 23891)
+++ /trunk/src/libs/xpcom18a4/nsprpub/pr/src/md/unix/uxproces.c	(revision 23892)
@@ -674,13 +674,5 @@
 	while (1) {
 	    do {
-#ifdef VBOX
-	        /*
-	         * make sure we wait only for child of our group
-	         * to ensure we do not interfere with RT
-	         */
-	        pid = waitpid((pid_t) 0, &status, 0);
-#else
 	        pid = waitpid((pid_t) -1, &status, 0);
-#endif
 	    } while ((pid_t) -1 == pid && EINTR == errno);
 
@@ -772,13 +764,5 @@
 	while (1) {
 	    do {
-#ifdef VBOX
-	        /*
-	         * make sure we wait only for child of our group
-	         * to ensure we do not interfere with RT
-	         */
-	        pid = waitpid((pid_t) 0, &status, WNOHANG);
-#else
 	        pid = waitpid((pid_t) -1, &status, WNOHANG);
-#endif
 	    } while ((pid_t) -1 == pid && EINTR == errno);
 	    if (0 == pid) break;