I definitely remember, I was a super casual player there back in the day. I just recently got back into poker and was shocked to find out about the bad stuff that went down there towards the end.
To summarize: someone had access to a "God Mode" where they could see the other person's hole cards and cheated some high stakes players out of millions. My understanding is that Phil Hellmuth has been absolved of any knowledge or involvement, but Annie Duke not so much... If you're interested Google it, there's plenty of info out there.