Who's had problems with glitching? Did you cure it, and if so how?

[andy-aj]

Trying to build a picture of the most common things that have caused glitching, so would be intereted in which Esc, Motor, Receiver, and Servo you had the problems with. Make and model would be good. Thanks in advanced, as this could save people the frustration of a bad day at the track.

Esc:-
Motor:-
Receiver:-
Servo:-