Well, i have a similar question.
When i use png´s as avatar, they look ugly destroyed. Do you know how i can use a png as "undestroyed" avatar ?
Link: http://devlounge.biz/forums/8/ShowThread.aspx#8 <-- there you see those bad looking avatar.
Thanks.
<edit>
Well i figured out, when i upload the picture via the Photos-Module and change the Link on the Profile to that Image url, it seems to be working fine. But there is a black Frame around that picture. Is it possible to remove that border?
Thanks