I just updated the avatar selection module to the 2.9 version and found some problems with the pager : loading never ends.
I was getting this message in my debug output "script stack space quota is exhausted" caused by jquery.js.
After a some research, I found out what was causing the problem : the browser.
In avatar_selection_pager.js, the variable 'data' passed to jquery was too big, since the page contained too much data.
Feel free to improve it.
There was also a problem in Opera about the opacity. It's in the patch too.