diff --git a/dom/plugins/BrowserStreamParent.cpp b/dom/plugins/BrowserStreamParent.cpp
index 1fba25eda72..2fecc660e17 100644
--- a/dom/plugins/BrowserStreamParent.cpp
+++ b/dom/plugins/BrowserStreamParent.cpp
@@ -50,11 +50,9 @@ BrowserStreamParent::WriteReady()
   _MOZ_LOG(__FUNCTION__);
 
   int32_t result;
-  if (!CallNPP_WriteReady(mStream->end, &result)) {
-    mNPP->mNPNIface->destroystream(mNPP->mNPP, mStream, NPRES_NETWORK_ERR);
-    // XXX is this right?
+  if (!CallNPP_WriteReady(mStream->end, &result))
     return -1;
-  }
+
   return result;
 }
 
diff --git a/dom/plugins/PPluginModule.ipdl b/dom/plugins/PPluginModule.ipdl
index e627b748ea5..4ba8ec86a2a 100644
--- a/dom/plugins/PPluginModule.ipdl
+++ b/dom/plugins/PPluginModule.ipdl
@@ -69,8 +69,6 @@ child:
     returns (NPError rv);
 
 parent:
-  // XXX does NPN_UserAgent need to be RPC? certainly hope not, but to
-  // XXX be safe ...
   rpc NPN_UserAgent()
     returns (nsCString userAgent);
 
diff --git a/dom/plugins/PluginProcessParent.cpp b/dom/plugins/PluginProcessParent.cpp
index a0e8ab8ec2e..2bf07db8026 100644
--- a/dom/plugins/PluginProcessParent.cpp
+++ b/dom/plugins/PluginProcessParent.cpp
@@ -57,7 +57,6 @@ PluginProcessParent::PluginProcessParent(const std::string& aPluginFilePath) :
     GeckoChildProcessHost(GeckoProcessType_Plugin),
     mPluginFilePath(aPluginFilePath)
 {
-  // XXXbent Need to catch crashing plugins by watching the process event!
 }
 
 PluginProcessParent::~PluginProcessParent()