We have had several folks asking about people who are missing from district mailing lists (e.g. ALL LINCOLN, ALL PRINCIPALS, etc.) when, in fact, they are actually still in the lists. The problem comes from contacts that get saved in your email contacts list that don't update once they are there.
Gradebook Slowness with Chrome
This is a bug with Infinite Campus and the latest version of Chrome.
Support is advising you to use Internet Explorer 11 for your grade book, if you experience slowness, until they get the bug fixed.