Kwatters and others have seen a bad Servo Palsy problem in recent releases.
This post is to document the details and get to the bottom of it

What is it ? :

• It only happens I believe to real hardware
• kwatters can see the symptom very acutely on Harry
• I do not see it with my pan/tilt - but using the webgui i can get mrlcomm errors if i move the lever for servo position around very quickly
  

kwatters says last october - "servo control and arduino control was rock solid back then."
Several new features have been added:

1. TimerEncoders - an important restructure 
   http://myrobotlab.org/content/servo-updates

2. And Arduino brownout recovery - which allows Arduino and Servos to recover after the Arduino suffers a power outage - it gives the user a nice error message too

   

3. Modularity of ServoControl & ServoControllers - ability of different types of ServoControllers e.g. I2C, RasPi, etc to more easily be swapped with Arduinos and their interfaces conforming to the generic mrl pub/sub

I put considerable work into these features.  There should be a way to integrate them and remove servo palsy.

If you have experimented with the develop branch please let us know your experiences and we'll put an end to Servo Palsy !