A large thread on Battlelog lists known issues with Battlefield 4, and what DICE is doing to clear up problems users are experiencing with the just-released military shooter sequel. These include missing perks, lost progression, file corruption, and other bugs. A few updates have been added since the post went up, the most recent explaining new server updates are live to address some of these issues. Word is: "Since the launch of Battlefield 4, some fans playing online have been experiencing various issues with the game. Thanks to your feedback, many of these problems have been resolved, but there are still a number of bugs that we are actively working on. Below you will find a list of some of the resolved issues, as well as some of the issues we are prioritizing at the moment and what we’re doing to address them."