As many of you are aware, many episodes of Arby 'n' the Chief have been deleted on YouTube for supposedly being scams. According to Jon's Twitter account, he also knows of his episodes' deletions and has informed Machinima about this. Here is the result from Jon himself:
"...certain Arby episodes are getting pulled due to tags written in their descriptions which now violate YouTube's revised metadata guidelines. I've been assured that staff are working to resolve the deletions as quickly as possible."
There you have it. Jon and Machinima both know about the situation and they're working on getting them back online soon. It's only just a matter of time.