diff --git a/hw/xquartz/quartzKeyboard.c b/hw/xquartz/quartzKeyboard.c
index 745333f03..75cf23ff4 100644
--- a/hw/xquartz/quartzKeyboard.c
+++ b/hw/xquartz/quartzKeyboard.c
@@ -427,20 +427,28 @@ void DarwinKeyboardReloadHandler(void) {
         }
     } pthread_mutex_unlock(&keyInfo_mutex);
 
-    /* Check for system .Xmodmap */
+    /* Modify with xmodmap */
     if (access(xmodmap, F_OK) == 0) {
+        /* Check for system .Xmodmap */
         if (access(sysmodmap, F_OK) == 0) {
-            snprintf (cmd, sizeof(cmd), "%s %s", xmodmap, sysmodmap);
-            X11ApplicationLaunchClient(cmd);
+            if(snprintf (cmd, sizeof(cmd), "%s %s", xmodmap, sysmodmap) < sizeof(cmd)) {
+                X11ApplicationLaunchClient(cmd);
+            } else {
+                ErrorF("X11.app: Unable to create / execute xmodmap command line");
+            }
         }
-    }
-        
-    /* Check for user's local .Xmodmap */
-    if (homedir != NULL) {
-        snprintf (usermodmap, sizeof(usermodmap), "%s/.Xmodmap", homedir);
-        if (access(usermodmap, F_OK) == 0) {
-            snprintf (cmd, sizeof(cmd), "%s %s", xmodmap, usermodmap);
-            X11ApplicationLaunchClient(cmd);
+
+        /* Check for user's local .Xmodmap */
+        if ((homedir != NULL) && (snprintf (usermodmap, sizeof(usermodmap), "%s/.Xmodmap", homedir) < sizeof(usermodmap))) {
+            if (access(usermodmap, F_OK) == 0) {
+                if(snprintf (cmd, sizeof(cmd), "%s %s", xmodmap, usermodmap) < sizeof(cmd)) {
+                    X11ApplicationLaunchClient(cmd);
+                } else {
+                    ErrorF("X11.app: Unable to create / execute xmodmap command line");
+                }
+            }
+        } else {
+            ErrorF("X11.app: Unable to determine path to user's .Xmodmap");
         }
     }
 }
diff --git a/hw/xquartz/xpr/dri.c b/hw/xquartz/xpr/dri.c
index dc780038d..0d2c51a2a 100644
--- a/hw/xquartz/xpr/dri.c
+++ b/hw/xquartz/xpr/dri.c
@@ -205,14 +205,14 @@ DRIScreenInit(ScreenPtr pScreen)
     DRIScreenPrivPtr    pDRIPriv;
     int                 i;
 
-    if (!dixRegisterPrivateKey(&DRIScreenPrivateKeyRec, PRIVATE_SCREEN, 0))
-	return FALSE:
-    if (!dixRegisterPrivateKey(&DRIWindowPrivateKeyRec, PRIVATE_WINDOW, 0))
-	return FALSE:
-    if (!dixRegisterPrivateKey(&DRIPixmapPrivateKeyRec, PRIVATE_PIXMAP, 0))
-	return FALSE:
-    if (!dixRegisterPrivateKey(&DRIPixmapBufferPrivateKeyRec, PRIVATE_PIXMAP, 0))
-	return FALSE:
+    if (!dixRegisterPrivateKey(&DRIScreenPrivKeyRec, PRIVATE_SCREEN, 0))
+	return FALSE;
+    if (!dixRegisterPrivateKey(&DRIWindowPrivKeyRec, PRIVATE_WINDOW, 0))
+	return FALSE;
+    if (!dixRegisterPrivateKey(&DRIPixmapPrivKeyRec, PRIVATE_PIXMAP, 0))
+	return FALSE;
+    if (!dixRegisterPrivateKey(&DRIPixmapBufferPrivKeyRec, PRIVATE_PIXMAP, 0))
+	return FALSE;
 
     pDRIPriv = (DRIScreenPrivPtr) calloc(1, sizeof(DRIScreenPrivRec));
     if (!pDRIPriv) {
diff --git a/hw/xquartz/xpr/driWrap.c b/hw/xquartz/xpr/driWrap.c
index efbae3caf..65843b83f 100644
--- a/hw/xquartz/xpr/driWrap.c
+++ b/hw/xquartz/xpr/driWrap.c
@@ -530,18 +530,12 @@ DRIWrapInit(ScreenPtr pScreen) {
     if(!dixRegisterPrivateKey(&driGCKeyRec, PRIVATE_GC, sizeof(DRIGCRec)))
 	return FALSE;
 
-    if(!dixRegisterPrivateKey(&driWrapScreenKeyRec, PRIVATE_WINDOW, sizeof(DRIWrapScreenRec)))
-	return FALSE;
-    
-    pScreenPriv = malloc(sizeof(*pScreenPriv));
-
-    if(NULL == pScreenPriv)
+    if(!dixRegisterPrivateKey(&driWrapScreenKeyRec, PRIVATE_SCREEN, sizeof(DRIWrapScreenRec)))
 	return FALSE;
 
+    pScreenPriv = dixGetPrivateAddr(&pScreen->devPrivates, &driWrapScreenKeyRec);
     pScreenPriv->CreateGC = pScreen->CreateGC;
     pScreen->CreateGC = DRICreateGC;
     
-    dixSetPrivate(&pScreen->devPrivates, driWrapScreenKey, pScreenPriv);
-        
     return TRUE;
 }
diff --git a/hw/xquartz/xpr/xprCursor.c b/hw/xquartz/xpr/xprCursor.c
index c268c2c87..67fcbe76e 100644
--- a/hw/xquartz/xpr/xprCursor.c
+++ b/hw/xquartz/xpr/xprCursor.c
@@ -58,7 +58,7 @@ typedef struct {
 } QuartzCursorScreenRec, *QuartzCursorScreenPtr;
 
 static DevPrivateKeyRec darwinCursorScreenKeyRec;
-#define darwinCursorScreenKey (&darwinCursorScreenKey)
+#define darwinCursorScreenKey (&darwinCursorScreenKeyRec)
 
 #define CURSOR_PRIV(pScreen) ((QuartzCursorScreenPtr) \
     dixLookupPrivate(&pScreen->devPrivates, darwinCursorScreenKey))
@@ -359,7 +359,7 @@ QuartzInitCursor(ScreenPtr pScreen)
     if (!miDCInitialize(pScreen, &quartzScreenFuncsRec))
         return FALSE;
 
-    if (!dixRegisterPrivate(&darwinCursorScreenKeyRec, PRIVATE_SCREEN, 0))
+    if (!dixRegisterPrivateKey(&darwinCursorScreenKeyRec, PRIVATE_SCREEN, 0))
 	return FALSE;
 
     ScreenPriv = calloc(1, sizeof(QuartzCursorScreenRec));