I have been getting the same error too. I've tried to change file sizes, formats and image size, but I get the same result. If anyone has a solution please tell me. Is there something I am doing wrong while uploading, or it something to do with the browser I use. I use firefox.
Yeah, I'm with the other people here. I tried putting up an avatar a few times today. I can't get it through.
I have also experienced the problems with avatar. I'd tried uploading various sizes too. I began with a normal photo and came to 160x160 pixels - still doesn't work. Apparently, it supports JPEG format, so I couldn't figure out what was wrong. I don't receive these numerous errors, though. They must have been fixed. When I try to load a photo, it only says "System error. Try again later." I did, nothing. Well, I'll wait some more and "try again later." Hopefully, this problem will be solved. I'd really like to have an avatar.