What I know & remember LordFat railed a lot about Lupa being fired by Michaud, allegedly for not immediately attending a Skype call (later it turned out she ignored the call for hours). The 4chan greentext threw a rumour that Lindsay, Rachel etc. were "casting couched" by Doug, but the same text alleges that LordKat had gay sex with Sean Fausz and that Spoony was almost killed for gambling debts by the Las Vegas mafia, so...
The one thing I could believe from that greentext is that Lindsay hated Rachel for being prettier than her. Rachel AFAIK plays in a band and is married and doing fine. Also guest stars in NC sometimes so I guess Doug didn't do anything wrong to her.
The one person who was sexually harassed at CA is Sean Fausz, believe it or not. At least his allegations were credible last time I've heard of them.