This week, Club Penguin is going to be working on upgrading their servers to make Club Penguin load much faster. But, there still may be a few bugs in-game due to the improvements.
If you experience any issues, be sure to clear your cache.
Also, it may be possible that Club Penguin “trainers” (programs used for cheating coins, etc.) may not work anymore due to this update. I think this is a great improvement because it makes Club Penguin much safer for users and more fair for all players