We've been discussing on chat that recently two accounts were suspended. Honestly, I don't remember anything such on this site. The general policy of this measure known, but what warrants such a punishment on MY? What is public about the background of these two particular cases?
Generally speaking (and I can't think of any exceptions of the top of my head, though they may well exist), Mi Yodeya's moderators use suspensions for the standard reasons used network-wide, or close variations thereof. Again generally speaking, we use suspensions to interrupt a pattern of behavior that we consider to be harmful to the community or our collection of content, to reinforce requests for changes in behavior that we have already made, either in public or in private.
As a matter of policy, we don't discuss individual cases of private communications, including suspension, in public.