Just days after it's release, Nintendo have recalled Super Paper Mario on the Wii. A bug is present in the EU version whilst playing English, German or Spanish that can freeze the entire game.
The problem in question is not major; if you do not encounter it that is. You may have already gone past the point in the game where it appears. Here's where it happens and how to avoid it: (Warning: This may contain spoilers)
At the start of Chapter 2-2, you will come across a character called Mimi. She will tell you to go to the farthest room on the first floor to meet a character called Merlee. Enter that room and press the green switch. A trap will be triggered, and a spiked ceiling will descend upon Mario. Before the ceiling reaches him, flip into 3D and jump on it to find a key.
If you pick up the key, you won't run into any problems. Use it to open the locked door to Mimi's right. However, if you talk to Mimi without picking up the key, the game will freeze. You will then have to turn off your Wii console and start again from your last save point.
If you have already purchased the game you will be able to send it back to Nintendo free of charge. The address of this has not yet been made available by Nintendo but we will inform you as soon as they do.
The choice is up to you – either return your copy so there is no chance you come across the glitch, or keep it and just remember to pick up the key when the time comes.
The copies in stores available now may also contain the bug but Nintendo will be replacing these with the new corrected version. If you are in doubt, ask the retailer which version they stock.