Particle Problem

I’ve been trying to figure out the cause of a problem I’ve been having with the particle system. I’ve searched as well as I could for solutions, but my searches have been unsuccessful since I’m not even sure what to call it.

First, I should mention that I’m trying to emulate a tutorial by Colin over at when this problem cropped up. Even when I follow his steps exactly, I come up with a ‘grouping’ of particles. His particle streams seem smooth with no indication of this effect I’m getting (this is mid-rotation):

I’ve tried changing every setting I can think of to affect it but the only thing I can really affect is the length of this grouping. Is this a bug? Or am I just missing something? The only difference I know of is that he was running 2.41 in the tutorial whereas I am running 2.43 (on Windows and Mac with the same results).

Any advice? This is most annoying.

My blend file is here if you want to see what settings I’m using.

Lol i’ve done this a million times.
To me it looks like the circle is to small, try scaling it then keyframing it. If that doesn’t work PM me and ill work on a little something something and give you the file.

Lower the Amount value to about 600 (6 verts on your circle) and if you want the particles closer together drop the Normal value in Velocity.