as the rules on the "Edit Signature"-page says I could use everything except html. I want to upload/add an animated gif, which is 468x60 and 15 KB. When I've try to add this it say's: "Unable to save image", also when I'm using a link to my site.
I can confirm this problem. I have tried both uploading a pic and linking to one (actually the port reply button here!) and both times got an error stating Unable to save image