swift-generic deadlocks occasionally

[Katzmann , Michael]

I'm trying to use speech-dispatcher with the generaic module (Cepstral swift).
Frequently (say after an hour of use) speech-dispatcher deadlocks waiting for a 
mutex. I can see from ps that speech-dispatcher (and Orca) is waiting on a 
'futex'.
I'm using the command in the configuration:

GenericExecuteSynth \
"padsp /opt/swift/bin/swift -p 
speech/rate=$RATE,speech/pitch/shift=$PITCH,tts/content-type=text/plain,tts/text-encoding=utf-8,config/default-voice=$VOICE
 \'$DATA\'"

Does anyone have a suggestion of a fix ?  Is it likely to be a problem with 
pulse-audio or with speech dispatcher killing processes when new speech is 
initiated ?

Michael
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