When bug 1153896 was fixed in June 2013, the avatar cache was moved into /tmp, which gets cleared at each reboot. If you delete ~/.cache/friends/avatars now it'll go away and never come back.
When bug 1153896 was fixed in June 2013, the avatar cache was moved into /tmp, which gets cleared at each reboot. If you delete ~/.cache/ friends/ avatars now it'll go away and never come back.