BBpress +Buddypress avatars are blurry for topic authors

o I am running bp +bbpress + mingle a bp theme. Latest updates of all. Whan an author starts a new topic in bbpress forums his avatar is really blurry you can;t even see who it is. I know they are pulling the avatars from bp but I just don't know how to fix it. Something interesting is that this only happens for about half my users. Some of the users avatars are not blurry.