If you don't use Gerrit review services of https://review.linaro.org you can stop reading now.
Over this weekend, Systems team reconfigured login mechanism of https://review.linaro.org to be based on LDAP authentication instead of previously used OpenID authentication.
The only expected user-visible change is that now there will be native Gerrit login page (https://review.linaro.org/login/q/status:open,n,z) instead of redirection to https://crowd.linaro.org/... . So, please don't be alerted, this is expected change. Login credentials otherwise stay the same - Linaro email address and standard Linaro password. If you find that you're still logged in to Gerrit on Monday, you're recommended to log out and log in again via new methods.
The reason for this change is that unfortunately Gerrit ties generic LDAP integration (e.g. being able to use LDAP groups) to LDAP-backed authentication method. We had this enabled on few project-specific instances, and as stakeholders elaborated Gerrit usage, we started to get requests to set up more advanced workflows for the public instance too. Unfortunately, with OpenID-based auth, we couldn't set up Gerrit groups based on existing centrally managed LDAP groups, so the only choice was to duplicate user lists which is error-prone and doesn't scale. The change above fixes that, and it's expected that we'll follow with the similar change on another public instance, http://review.android.git.linaro.org/ .
We tried our best to make the migration seamless, but if you experience or spot any issues, please let us know - either by directly replying to this mail, pinging #linaro-systems channel or submitting ITS request via firstname.lastname@example.org (the latter is standard, preferred method, but feel free to use other for possibly quicker turnaround). You are recommended to check your Gerrit group membership after logging in via new method, by visiting page https://review.linaro.org/#/settings/group-memberships . If you see that any groups you used to have are missing, let us know immediately.