I might add that folders I brought over from my old system don't share this bizarre behavior; ie, newly created documents placed inside do not snap to upper left corner upon being taken out for the first time.
The same seems to hold true for folders created on the new iMac which have been around for a couple weeks (which makes the problem even more interesting ~ complex).
Update: If that was true, it isn't anymore. Documents put in old(er) and imported folders exhibit the same behavior — first time move from Desktop to folder and then removal back to Desktop yields the same snapping behavior (and subsequent normal behavior).
