It's an upload thing. The contributor IDs (1,2,3...205) are assigned on alphabetical order of contributor name. Thus if you are contributer C and I add contributor B then your ID will change. When this gets out of sync (during a big upload) there will be a few hours when the IDs _may_ be wrong i.e. old ID on link on photo page won't match that contributors new ID.
This is noticable today becuase (a) my upload is going very slowly and (b) it's a large update due to the splitting of the Pimelodidae and the addition of a bunch of new pics.