Hey,
I've just changed a forum setting, which puts (on the server) any new attachments to a different folder than the old ones were in. The reason for this is that the old folder has grown extremely large, to the point where I often get timeout errors when trying to back it up.
I've tested this and it seems everything's working 100% fine, so there should be nothing to worry about, and it should be a completely invisible change as far as the average user is concerned - but just on the offchance that anything does go wrong, let me know ASAP if you notice any problems with attachments uploaded more recently than when this message was posted. This only applies to regular posts, not private messages.