Ok I am reopening this because the issue log shows all previous reports of this problem as resolved for duplicates - they can't ALL be duplicates.
Friends list on the web and in world not working for anyone is halting commerce and daily operations for thousands of residents, this should be the highest priority. I am attaching a screenshot of previous closed threads and no open threads. Friends online not working since the update on Wed 4/24. Please give this highest priority and it would also be nice if a Linden could respond with some inclination of estimated fix for this.