diff -up mozilla/security/nss/lib/nss/nssinit.c.784672 mozilla/security/nss/lib/nss/nssinit.c
--- mozilla/security/nss/lib/nss/nssinit.c.784672	2012-01-26 14:43:46.232357231 -0800
+++ mozilla/security/nss/lib/nss/nssinit.c	2012-01-26 14:50:55.830512565 -0800
@@ -944,6 +944,12 @@ NSS_RegisterShutdown(NSS_ShutdownFunc sF
 {
     int i;
 
+    /* make sure our lock and condition variable are initialized one and only
+     * one time */ 
+    if (PR_CallOnce(&nssInitOnce, nss_doLockInit) != PR_SUCCESS) {
+	return SECFailure;
+    }
+
     PZ_Lock(nssInitLock);
     if (!NSS_IsInitialized()) {
 	PZ_Unlock(nssInitLock);
@@ -1002,6 +1008,11 @@ NSS_UnregisterShutdown(NSS_ShutdownFunc
 {
     int i;
 
+    /* make sure our lock and condition variable are initialized one and only
+     * one time */ 
+    if (PR_CallOnce(&nssInitOnce, nss_doLockInit) != PR_SUCCESS) {
+	return SECFailure;
+    }
     PZ_Lock(nssInitLock);
     if (!NSS_IsInitialized()) {
 	PZ_Unlock(nssInitLock);
@@ -1192,6 +1203,11 @@ NSS_ShutdownContext(NSSInitContext *cont
 {
     SECStatus rv = SECSuccess;
 
+    /* make sure our lock and condition variable are initialized one and only
+     * one time */ 
+    if (PR_CallOnce(&nssInitOnce, nss_doLockInit) != PR_SUCCESS) {
+	return SECFailure;
+    }
     PZ_Lock(nssInitLock);
     /* If one or more threads are in the middle of init, wait for them
      * to complete */