member avatars in group discussions fuzzy
Using Jamroom
Let me know if that looks better.
I modified the comment_form.tpl and the item_list,tpl in the comment module.
ACP > Item Features > Comments > Templates.
You can use the compare tool to see what I did, which basically all I did was change the image size from small to medium and then added a style parameter to add a max-width and max-height.
Hope this helps!