Here's the story: we use Crowd for authentication, and we were experiencing the "duplicate user" bug. The fix for this bug in particular is to turn on the lower-case output only option in Crowd. We went ahead and did that, and now some of our projects are incorrectly displaying charts for only some of our projects. Here is an example of what I mean:
Chart displaying incorrect values:

Here's what these charts should look like:

Something I'm also hearing from the affected users is that not all tasks/hours recorded against tasks are properly associated with user accounts. This tells me that there is likely orphaned data in the DB, and that leads to the next question I'll be posting. Has anyone got some insight?
Thanks,
-Sheppe