It could be that SubDownloader was hit by the IMDB issue worse than the rest? (in the case of SolEol, it just wouldn't upload, so couldn't mismatch). I have reported dozens of incorrect iMDBids but I never checked if it was all by the same user, agent or what. The misses seemed consistently incorrect (not a lot of wrong IDs but always the same for each one), though.
I stand corrected, it was BSPlayer v2.56 (maybe for all of the uploads). And I'm pretty certain it's been happening before IMDb's changes commenced. He may be using the "autoupload" feature (since he uploads around 50 a day), even so, I think this should be better than it is.