diff --git a/user/test/com/google/gwt/dev/jjs/test/HostedTest.java b/user/test/com/google/gwt/dev/jjs/test/HostedTest.java
index fdc19cf..73bd9bf 100644
--- a/user/test/com/google/gwt/dev/jjs/test/HostedTest.java
+++ b/user/test/com/google/gwt/dev/jjs/test/HostedTest.java
@@ -276,7 +276,12 @@
     assertEquals("VAL3-foo", TestEnum.VAL3.foo());
   }
 
-  public void testFloat() {
+  /**
+   * Returning Float.MAX_VALUE or Double.MAX_VALUE causes firefox to crash on
+   * Windows in dev mode
+   * TODO (jat): Enable this test before shipping GWT 2.0.
+   */
+  public void disabledTestFloat() {
     storeFloat(Float.MIN_VALUE);
     float f = getFloat();
     assertTrue(f == Float.MIN_VALUE);
@@ -410,8 +415,12 @@
   /**
    * More test cases resulting from issue 2426 to show that primitives can be
    * passed through JSNI methods unmolested.
+   * 
+   * Returning Float.MAX_VALUE or Double.MAX_VALUE causes firefox to crash on
+   * Windows in dev mode
+   * TODO(jat): Enable this test before shipping GWT 2.0. 
    */
-  public void testJsniPassthroughPrimitives() {
+  public void disabledTestJsniPassthroughPrimitives() {
     class Inner {
       native boolean nativeBoolean(boolean param) /*-{
         return param;