--- a/ipc/ipdl/test/cxx/PTestHangs.ipdl
+++ b/ipc/ipdl/test/cxx/PTestHangs.ipdl
@@ -9,17 +9,17 @@ both:
 parent:
     async Nonce();
 
 child:
     async Start();
     intr Hang();
     async __delete__();
 
-
+/*
 state START:
     send Start goto RACE;
 
 state RACE:
     recv Nonce goto RACE1;
     call StackFrame goto RACE2;
 state RACE1:
     call StackFrame goto FRAME2;
@@ -29,12 +29,13 @@ state RACE2:
 // So as to test unwinding the RPC stack
 state FRAME2: answer StackFrame goto FRAME3;
 state FRAME3: call StackFrame goto FRAME4;
 state FRAME4: answer StackFrame goto HANG;
 state HANG:   call Hang goto DEATH;
 
 state DEATH:
     send __delete__;
+*/
 };
 
 } // namespace _ipdltest
 } // namespace mozilla

--- a/ipc/ipdl/test/cxx/PTestInterruptRaces.ipdl
+++ b/ipc/ipdl/test/cxx/PTestInterruptRaces.ipdl
@@ -14,16 +14,17 @@ parent:
 
 child:
     async Start();
     async Wakeup();
     async Wakeup3();
     intr Child();
     async __delete__();
 
+/*
 state START:
     send Start goto TEST1;
 
 // First test: race while no other messages are on the Interrupt stack
 state TEST1:
     recv StartRace goto RACE1;
 state RACE1:
     call Race goto DUMMY1_1;
@@ -71,12 +72,14 @@ state CHECK:
     recv GetAnsweredParent goto DYING;
     // because of deferred processing, the parent receives the child's
     // message here
     answer Parent goto DYING;
 
 
 state DYING:
     send __delete__;
+*/
+
 };
 
 } // namespace _ipdltest
 } // namespace mozilla

--- a/ipc/ipdl/test/cxx/PTestInterruptShutdownRace.ipdl
+++ b/ipc/ipdl/test/cxx/PTestInterruptShutdownRace.ipdl
@@ -6,16 +6,17 @@ parent:
     sync StartDeath();
     async Orphan();
 
 child:
     async Start();
     intr Exit();
     async __delete__();
 
+/*
 state START:
     send Start goto START_DEATH;
 
 state START_DEATH:
     recv StartDeath goto EXITING;
 
 state EXITING:
     recv Orphan goto QUITTING1;
@@ -23,12 +24,13 @@ state EXITING:
 
 state QUITTING1:
     call Exit goto DEAD;
 state QUITTING2:
     recv Orphan goto DEAD;
 
 state DEAD:
     send __delete__;
+*/
 };
 
 } // namespace _ipdltest
 } // namespace mozilla

--- a/ipc/ipdl/test/cxx/PTestLatency.ipdl
+++ b/ipc/ipdl/test/cxx/PTestLatency.ipdl
@@ -15,16 +15,17 @@ child:
     async CompressedSpam(uint32_t seqno) compress;
     intr Synchro2() returns (uint32_t lastSeqno,
                             uint32_t numMessagesDispatched);
 
 parent:
     async Pong();
     async Pong5();
 
+/*
 state START:
     // if the timing resolution is too low, abort the test
     send __delete__;
     // otherwise, kick off the ping/pong trials
     send Ping goto PONG;
 
     // Trial 1: single ping/pong latency
 state PING:
@@ -63,13 +64,14 @@ state SPAM:
     // Trial 5: lots of async spam, but compressed to cut down on
     // dispatch overhead
 state COMPRESSED_SPAM:          // compressed spam, mmm
     send CompressedSpam goto COMPRESSED_SPAM;
     call Synchro2 goto DONE;
 
 state DONE:
     send __delete__;
+*/
 };
 
 
 } // namespace mozilla
 } // namespace _ipdltest

--- a/ipc/ipdl/test/cxx/PTestNestedLoops.ipdl
+++ b/ipc/ipdl/test/cxx/PTestNestedLoops.ipdl
@@ -8,27 +8,28 @@ intr protocol PTestNestedLoops {
 child:
     async Start();
     intr R();
     async __delete__();
 
 parent:
     async Nonce();
 
-
+/*
 state START:
     send Start goto RACE;
 
 state RACE:
     recv Nonce goto RACE1;
     call R goto RACE2;
 state RACE1:
     call R goto DEAD;
 state RACE2:
     recv Nonce goto DEAD;
 
 state DEAD:
     send __delete__;
+*/
 };
 
 
 } // namespace mozilla
 } // namespace _ipdltest