European? Strange.
Well, yeah, maybe it could be an addressing issue. For example, Korg uses(or at least used to, I don't have any new Korg gear to really test with, and what I can test with is consistent with what I'm about to say) that type of numbering system. Program 00 is actually program 01, so their banks go from 00 to 99 instead of 1-100, since you can only use 2 digits. It ends up being essentially the same thing but throws you out of whack if you can't wrap your head around it fast.
So, with that in mind, sure, try changing your addresses. No guarantee, but that might be it. But I'm not entirely sure since you say this was a working system and now this is a NEW issue.
Just to let you know, Elation has a DIP switch calculator that I recommend everyone download. It should save a lot of time with the DIP switch monkey business.
In the meantime, buy or build a DMX Terminator, they are handy to have around. You definately won't need it for testing with such short lengths, but I bet your runs go longer at events. Better safe than sorry, I say. I always use a DMX terminator. At my last show, I had 3 runs, all of which were at least 200 cable feet, 1 was over 300 feet, another was at least 250 cable feet.
But I digress. Back to your addressing issue:
Set the scanner to DIP 1 on, all others off. This SHOULD set you to DMX starting address 1. Power up your light, or if you changed the DIP switches while powered up, power cycle the light. Plug in DMX now if you haven't already. Press your Scanner 1 button, and I am now assuming that you know what channel controls what attributes. This might point out addressing issues.
I get the impression you're pretty familiar with how the light SHOULD be working, especially posting with a statement that the lights are moving SLOW like that. And the fact that BOTH are doing the same thing sort of points to perhaps the controller, not cabling or fixtures, OR, operator error. BUT, you've tried the fade time fader, so it's not that, and you've mentioned that perhaps you've got a speed channel, so you definately aren't lost.
It would be nice if you had more than 1 controller to test with, just to rule out the Obey 40, or narrow it down to it.
You wouldn't happen to have some old par cans and dimmer packs laying around just to test with? I know it's not a Mighty Scan, but I'm just throwing out ideas to test stuff working or not in the Obey 40. I'm not slamming the Obey 40, because if I suspected my ADJ DMX Operator, I'd be doing the same thing if I could.