Hmm, I’m not sure that the Interval system is designed to be thread-safe. You’d be best to ensure that you don’t make multiple calls into the Interval system from different threads. Maybe you should define just one thread to do all of your Interval calls?
Of course, if you are using multiple threads in conjunction with Panda, you will have other problems too, unless you have compiled your own version of Panda specifically enabling thread support.
David