Okay so PS Donkey has an avatar of a squirrel swinging two nuts and I mean of that sort 0_0
It was 100 x 182 pixels and he managed to upload it despite the 100 x 100, but what really happened was that limit was changed to 100 x 182 and I managed to get in an avatar of that size too, later the limit was changed back however I still retained my over sized avatar.
But now it's been removed XD, probably because it was over sized (or someone doesn't like Nanoha in a school girl swimsuit).