The game was updated a while ago so that is likely it, I don't have much other info as I haven't played the game much as it only unlocked yesterday here but it did update from the preload files shortly before.
Could also be region specific but I don't think the US and EU versions differ aside from maybe potential censors like the German version if it's been affected at all.
EDIT: Unsure what the patch actually did as the game exe still says 1.0.0.0na (Funny about that last two letters but that's what it says.) and 1.1 in-game but several core files were patched so it could be anything from minor fixes to a toned down version of their DRM as with say From Dust which had such a patch yesterday with some misc fixes added in.
EDIT #2: Updated files.
Link(Multiupload, mostly the exe but also the updated .dll files as I assume that game file is needed for the trainer since the exe is so small, should there be a need to re-check though the previous exe was around 300 KB and this one is ~500 KB, didn't manage to compare the dll files before they got updated.)
[Edited by LordJB, 9/8/2011 9:36:58 PM]