--- a/testing/web-platform/meta/content-security-policy/media-src/media-src-7_3_2.html.ini
+++ b/testing/web-platform/meta/content-security-policy/media-src/media-src-7_3_2.html.ini
@@ -1,10 +1,11 @@
 [media-src-7_3_2.html]
   type: testharness
+  disabled: https://bugzilla.mozilla.org/show_bug.cgi?id=1179233
   expected:
     if not debug and (os == "win") and (version == "5.1.2600") and (processor == "x86") and (bits == 32): TIMEOUT
     if debug and (os == "win") and (version == "5.1.2600") and (processor == "x86") and (bits == 32): TIMEOUT
     if not debug and (os == "linux") and (version == "Ubuntu 12.04") and (processor == "x86") and (bits == 32): TIMEOUT
     if not debug and (os == "mac") and (version == "OS X 10.8") and (processor == "x86_64") and (bits == 64): TIMEOUT
     if not debug and (os == "linux") and (version == "Ubuntu 12.04") and (processor == "x86_64") and (bits == 64): TIMEOUT
     if debug and (os == "linux") and (version == "Ubuntu 12.04") and (processor == "x86_64") and (bits == 64): TIMEOUT
     if debug and (os == "linux") and (version == "Ubuntu 12.04") and (processor == "x86") and (bits == 32): TIMEOUT

--- a/testing/web-platform/meta/hr-time/basic.html.ini
+++ b/testing/web-platform/meta/hr-time/basic.html.ini
@@ -1,6 +1,5 @@
 [basic.html]
   type: testharness
   [High resolution time has approximately the right relative magnitude]
     disabled:
       if os == "win": inaccurate clock on Windows
-

--- a/testing/web-platform/meta/media-source/SourceBuffer-abort-readyState.html.ini
+++ b/testing/web-platform/meta/media-source/SourceBuffer-abort-readyState.html.ini
@@ -1,8 +1,10 @@
 [SourceBuffer-abort-readyState.html]
   type: testharness
   prefs: [media.mediasource.enabled:true, media.mediasource.whitelist:false]
+  disabled:
+    if os == "linux": https://bugzilla.mozilla.org/show_bug.cgi?id=1105760
   [SourceBuffer#abort() (video/mp4) : If the readyState attribute of the parent media source is not in the "open" state then throw an INVALID_STATE_ERR exception and abort these steps.]
     expected:
       if not debug and (os == "win") and (version == "5.1.2600") and (processor == "x86") and (bits == 32): FAIL
       if debug and (os == "win") and (version == "5.1.2600") and (processor == "x86") and (bits == 32): FAIL
 

--- a/testing/web-platform/meta/navigation-timing/test_timing_xserver_redirect.html.ini
+++ b/testing/web-platform/meta/navigation-timing/test_timing_xserver_redirect.html.ini
@@ -1,4 +1,6 @@
 [test_timing_xserver_redirect.html]
   type: testharness
+  disabled:
+    if (os == "mac") and (version == "OS X 10.10"): https://bugzilla.mozilla.org/show_bug.cgi?id=1172135
   expected:
     if not debug and (os == "mac") and (version == "OS X 10.8") and (processor == "x86_64") and (bits == 64): TIMEOUT

--- a/testing/web-platform/mozilla/meta/service-workers/service-worker/fetch-event-network-error.https.html.ini
+++ b/testing/web-platform/mozilla/meta/service-workers/service-worker/fetch-event-network-error.https.html.ini
@@ -1,8 +1,10 @@
 [fetch-event-network-error.https.html]
   type: testharness
-  expected:
-    if debug and (os == "win") and (version == "6.2.9200") and (processor == "x86_64") and (bits == 64): CRASH
-    if debug and (os == "win") and (version == "6.1.7601") and (processor == "x86") and (bits == 32): CRASH
+  disabled:
+    if debug and (os == "win") and (version == "5.1.2600") and (processor == "x86") and (bits == 32): https://bugzilla.mozilla.org/show_bug.cgi?id=1178715
+    if debug and (os == "win") and (version == "6.2.9200") and (processor == "x86_64") and (bits == 64): https://bugzilla.mozilla.org/show_bug.cgi?id=1178715
+    if debug and (os == "mac") and (version == "OS X 10.10.2") and (processor == "x86_64") and (bits == 64): https://bugzilla.mozilla.org/show_bug.cgi?id=1178715
+    if debug and (os == "win") and (version == "6.1.7601") and (processor == "x86") and (bits == 32): https://bugzilla.mozilla.org/show_bug.cgi?id=1178715
   [Rejecting the fetch event or using preventDefault() causes a network error]
     expected: FAIL
 

--- a/testing/web-platform/mozilla/meta/service-workers/service-worker/resource-timing.https.html.ini
+++ b/testing/web-platform/mozilla/meta/service-workers/service-worker/resource-timing.https.html.ini
@@ -1,12 +1,10 @@
 [resource-timing.https.html]
   type: testharness
-  expected:
-    if not debug and (os == "mac") and (version == "OS X 10.8") and (processor == "x86_64") and (bits == 64): TIMEOUT
+  disabled: https://bugzilla.mozilla.org/show_bug.cgi?id=1178713
   [Controlled resource loads]
     expected:
-      if not debug and (os == "mac") and (version == "OS X 10.8") and (processor == "x86_64") and (bits == 64): TIMEOUT
       FAIL
 
   [Non-controlled resource loads]
     expected: FAIL