What I am seeing: I can be in a fight, or running from point A to point B, or in a conversation with a quest giver, I could be in a dungeon or a cave or "in town", I might be in Act II, Act III or Act IV ... suddenly the game just freezes, I can't do anything. My mouse turns into a spinning wheel for a few minutes (anywhere from 2 to 4 minutes) and then the game will give me a disconnected message. When I click "OK" on the disconnect window, I am almost always back at my hero selection screen, not completely logged out of the game; although, that has happened a couple of times as well.
My graphics settings are set almost as low as they can go, I play in a small windowed mode window and haven't had a single issue the first couple of weeks with this sort of thing. Just the last few days.
Is this just me or is it randomly happening to a number of people?