I play on Carbon Poker. The HUD for Pokertracker 4 shows up on cash games, but not tournaments. I just started playing again this week for the first time in about a year. I tried to update PokerTracker (my most recent download from last year is version 4.10. ), but Norton antivirus on my computer refused to allow the download. It says Pokertracker 4.11.11 is unsafe and provides a link to Symantic which says something about suspicious.cloud.9 detection technology dating back to May 2013. Any suggestions would be much appreciated.