Mine keep failing as well. The upload fails when trying to set a user picture (avatar). I know it says max size is 200x200 pixels and I tried multiple different pictures smaller than that (really tiny!) and all failed. I tried saving to computer first and directly upload, I tried using a website link, I tried photobucket, I even shrunk some of the pictures to under 100x100 and they all still failed. I tried atleast 5-7 pictures
I posted some in my garage thread and they were there yesterday but now are gone. I'm uploading direct from my digital camera. I posted some in my albums under profile and see if they will stay. If they do I may link them from there.