Serena was on probation from 2009 when she threatened to shove a tennis ball down a linesman's throat. She had to be good in 2010 and 2011 to avoid a U.S. Open suspension.
So, she didn't make it -- telling the chair umpire that she was a hater and ugly inside and that if she ever saw Serena in the hall she better look the other way b/c Serena was not someone she wanted to mess with.
So, if the U.S. Open folks have any guts at all (a questionable premise) they will fine Serena $97,500 and ban her from next year's Open. I think the better option would be to tell Serena that if she donated her entire winning from the 2011 Open to charity she can avoid a ban for 2012. If not, it is a $97,500 fine and a ban. Let Serena choose.
By the by -- Serena is the worst kind of phony. When she loses she blames others and then pretends that she cannot remember what she said or did and is all sweetness and light........except she won't apologize for threatening people who are just trying to do their jobs. She apparently remembers the incident well enough to say that she was wronged, but not well enough to recall the fact that her first instinct is to threaten physical violence against the person who wronged her.
She may be the female O.J. Look out for her when she turned 50+!