We apologise for the sudden appearance of a series of old threads with the wrong dates attached. This is a technical problem linked to the way the website functions and we are currently trying to deal with it. We can only ask comrades to be patient. The problem will not affect their ability to post on the more recent threads on the forum.
The sort criteria of the forum topics have just been changed, in order to get rid of the trouble resulting from a long term maintenance operation. You shouldn't be bothered with date confusion anymore.
It should work better now, but not perfectly though. Post date issues are still expected to occur during website maintenance operations, but should be limited to few comment post dates only. This is nonetheless a "lesser evil" option, the less disturbing one for forum users.