Backing out my previous change, to enable AutoRegister again on the Mac. sdagley checked in a change to NSPR which fixes the crash on launch.

xpcom/components/nsRepository.cpp

@@ -722,10 +722,7 @@ nsresult nsRepository::Initialize(void)
 #endif
 	
 	// Initiate autoreg
-#ifndef XP_MAC
-	// this is seriously broken on Mac right now; this is a temporary workaround
 	AutoRegister(NS_Startup, NULL);
-#endif
 
 	return NS_OK;
 }

xpcom/src/nsRepository.cpp

@@ -722,10 +722,7 @@ nsresult nsRepository::Initialize(void)
 #endif
 	
 	// Initiate autoreg
-#ifndef XP_MAC
-	// this is seriously broken on Mac right now; this is a temporary workaround
 	AutoRegister(NS_Startup, NULL);
-#endif
 
 	return NS_OK;
 }