Ealier today, we experienced an issue with Kiln On Demand where non-admin users couldn't access Kiln via the website or from the mercurial client. We've applied a patch to all Kiln On Demand accounts that addresses this issue.
A side effect of this bug caused user permissions related to repositories and Kiln projects to be in an unusable state. This does not affect site admins. We couldn't tell if a user simply had write access to a project or repository or if they had per-project or per-repository admin access. Because we couldn't tell the difference, we defaulted back to write-only access in these cases.
What this means for you: If you previously were a per-project or per-repository admin, your permissions on these projects and repositories have now been set to write only. You'll need to have a site administrator restore you as an admin on those particular projects and repositories. Users that are site admins are not affected by this issue.
We'll be following up on the status blog with more details later today to let you know exactly what happened.