diff --git a/dom/base/crashtests/324871-1.html b/dom/base/crashtests/324871-1.html
deleted file mode 100644
index 21aa46230fbe..000000000000
--- a/dom/base/crashtests/324871-1.html
+++ /dev/null
@@ -1,14 +0,0 @@
-<html>
-<head>
-<script>
-function loaded() {
-  var node = document;
-  var handler = function(operation, key, data, src, dst) { alert(data); };
-  node.setUserData("foo", "data", handler);
-}
-</script>
-</head>
-<body onload="loaded();">
-<div id="elem"></div>
-</body>
-</html>
\ No newline at end of file
diff --git a/dom/base/crashtests/822691.html b/dom/base/crashtests/822691.html
deleted file mode 100644
index 8bc8eb831b45..000000000000
--- a/dom/base/crashtests/822691.html
+++ /dev/null
@@ -1,21 +0,0 @@
-<!DOCTYPE html>
-<html>
-<head>
-<script>
-
-function boom()
-{
-  var frameDoc = document.getElementById("f").contentDocument;
-
-  var confusedNode = frameDoc.createTextNode("y");
-  confusedNode.__proto__ = document.createTextNode("x");
-  confusedNode.setUserData("key", "data", null);
-  confusedNode.setUserData("key", "data", null);
-}
-
-</script>
-</head>
-<body onload="boom();">
-<iframe src="data:text/html,1" id="f"></iframe>
-</body>
-</html>
diff --git a/dom/base/crashtests/crashtests.list b/dom/base/crashtests/crashtests.list
index 196745f02da1..04aa7fc06412 100644
--- a/dom/base/crashtests/crashtests.list
+++ b/dom/base/crashtests/crashtests.list
@@ -8,7 +8,6 @@ load 244933-1.html
 load 275912-1.html
 load 293388-1.html
 load 308120-1.xul
-load 324871-1.html
 load 325730-1.html
 load 326618-1.html
 load 326646-1.html
@@ -163,7 +162,6 @@ load 815477.html
 load 815500.html
 load 816253.html
 load 819014.html
-load 822691.html
 load 822723.html
 load 824719.html
 load 827190.html
diff --git a/dom/smil/crashtests/641388-1.html b/dom/smil/crashtests/641388-1.html
index 4d1f0ea048a6..25c941dedb32 100644
--- a/dom/smil/crashtests/641388-1.html
+++ b/dom/smil/crashtests/641388-1.html
@@ -53,7 +53,6 @@ try{o62=o13.ownerDocument.getElementById('ifr17516').contentDocument.getElementB
 try{tmp.id = 'ifr2522';}catch(e){}
 try{o101=o15.ownerDocument.getElementById('ifr2522').contentDocument.getElementById('element3');;}catch(e){}
 try{o101.appendChild(o24);}catch(e){}
-try{o109=o35.setUserData('key',null,function (o,k,d,s,ds) { gc(); });;}catch(e){}
 try{o112=document.createElementNS('http://www.w3.org/1999/xhtml', 'script');;}catch(e){}
 try{o124=document.createElementNS('http://www.w3.org/1998/Math/MathML','root');;}catch(e){}
 try{o125=document.createElementNS('http://www.w3.org/2000/svg','font-face');;}catch(e){}
diff --git a/js/xpconnect/crashtests/582649.html b/js/xpconnect/crashtests/582649.html
deleted file mode 100644
index 235858e3c7ef..000000000000
--- a/js/xpconnect/crashtests/582649.html
+++ /dev/null
@@ -1,12 +0,0 @@
-<html>
-<head>
-	<title>Testcase for bug 582649</title>
-</head>
-<body>
-<script>
-var foo = [];
-foo[0] = foo;
-document.body.setUserData("foo", foo, null);
-</script>
-</body>
-</html>
diff --git a/js/xpconnect/crashtests/crashtests.list b/js/xpconnect/crashtests/crashtests.list
index 7ed3a758c98c..67621bd00cd0 100644
--- a/js/xpconnect/crashtests/crashtests.list
+++ b/js/xpconnect/crashtests/crashtests.list
@@ -25,7 +25,6 @@ load 512815-1.html
 load 515726-1.html
 load 545291-1.html
 load 558979.html
-load 582649.html
 load 601284-1.html
 load 603146-1.html
 load 603858-1.html
