We will have a scheduled maintenance window tonight from 7:00pm to 11:00pm PST. The following changes will take place:

7:00pm PST (0300 UTC) addons.mozilla.org updates. We’ll be updating addons.mozilla.org to pick up code updates (bug 475774). No downtime expected.
7:00pm PDT (0300 UTC) ) crash-stats.mozilla.com (Socorro) database maintenance. We’ll be partitioning the production Socorro database (refer to [...]

We will have a scheduled maintenance window tonight from 7:00pm to 11:00pm PST. This is being tracked in master bug 475602. The following changes will take place:

7:00pm PST (0300 UTC) labs.mozilla.com blog updates. We’ll be updating labs.mozilla.com’s blog to pick up code updates. No downtime is expected.
7:00pm PST (0300 UTC) developer.mozilla.org / MDC [...]

We will have a scheduled maintenance window tonight from 7:00pm to 11:00pm PST. The following changes will take place:

7:00pm PST (0300 UTC) labs.mozilla.com updates. We’ll be updating labs.mozilla.com to pick up code updates (bug 469210). No downtime expected.
7:30pm PDT (0300 UTC) ) MDC / developer.mozilla.org updates. We’ll be updating developer.mozilla.org to pick up code updates [...]

We will have a scheduled maintenance window Thursday night from 7:00pm – 11:00pm PST (0300 – 0700 UTC). The following changes will take place:

7:00pm – We will be replacing a faulty midplane on a blade chassis containing 14 servers which support the following services:  addons.mozilla.org, download.mozilla.org, crash-stats.mozilla.com.  With the exception of crash-stats, the affected servers [...]

We have an off-schedule weekend maintenance window tonight from 8:00pm to 11:00pm PST. The following change will take place:

8:00pm PST (0500 UTC) Cisco IOS upgrades. We’ll be upgrading IOS on the two core switches to pickup feature enhancements. See bug 473084 for more details. The systems attached to these switches are multi-homed. No user-facing [...]