We will have a scheduled maintenance window tonight from 5:00pm to 11:00pm PST. The following changes will take place:

5:00pm PST (0100 UTC) addons.mozilla.org update. We’ll be updating addons.mozilla.org to pick up code updates (bug 529600). Duration 30 minutes.
9:00pm PST (0500 UTC) getpersonas.com GLB DNS change. We’ll be making DNS changes to move [...]

We will have a scheduled maintenance window tomorrow from 6:00am to
8:00am PST. The following changes will take place:
* 6:00am PST (1400 UTC) stage.mozilla.org – core operating system will be upgraded from RHEL4 to RHEL5.  Expected downtime 60 minutes, things may not behave quite right for an hour or two after the upgrade as the loose [...]

We will have a scheduled maintenance window tomorrow from 6:00pm to  7:30pm PST. The following changes will take place:
* 6:00pm PST (0200 UTC) bugzilla.mozilla.org update.  We’ll be
upgrading Bugzilla from version 3.2.4 to 3.4.3 (bug 503055).  Duration 90 minutes.
Feel free to comment directly if you see issues past the planned  downtime.

We will have a scheduled maintenance window tonight from 5:00pm to 11:00pm PST. The following changes will take place:

5:00pm PST (0100 UTC) addons.mozilla.org update. We’ll be updating addons.mozilla.org to pick up code updates (bug 528272). Duration 30 minutes.
7:00pm PST (0300 UTC) getpersonas.com update. We’ll be updating getpersonas.com to pick up code updates (bug [...]

At around 5:07am PST this morning, Mozilla’s primary datacenter suffered an approximately 13 minute outage.
Mozilla uses redundant Cisco Firewall Service Modules in the core Cisco 6509 switches. At about 5:07am the primary unit failed and appears to have crashed within the failover code. This caused an incomplete failover and the standby FWSM never [...]

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) support.mozilla.com update. We’ll be updating support.mozilla.com to pick up code updates (bug 526284) . Duration 60 minutes.
7:00pm PST (0300 UTC) getpersonas.com update and database upgrade. We’ll be updating getpersonas.com to [...]

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

7:00pm PDT (0200 UTC) labs.mozilla.com migration. We’ll be migrating labs.mozilla.com to mozillalabs.com (bug 489638). Duration 60 minutes.
9:00pm PDT (0400 UTC) addons.mozilla.org backend server maintenance. We’ll be making changes to the backend storage (bug 517015) and [...]

We will have a scheduled maintenance window tonight from 5:00pm to  8:00pm PDT. The following changes will take place:
* 5:00pm PDT (0000 UTC) addons.mozilla.org database hardware upgrade. We’ll be adding additional RAM to the master database server for addons.mozilla.org. (bug 522112). Duration 30 minutes (although the site may stay down pending completion of the file [...]

We will have a scheduled maintenance window tonight from 6:00pm to 11:00pm PDT. The following changes will take place:

9:00pm PDT (0400 UTC) addons.mozilla.org update. We’ll be updating addons.mozilla.org to pick up code updates (bug 523428). Duration 30 minutes.
9:00pm PDT (0400 UTC) We’ll be rolling changes to push several production websites out of Amsterdam. [...]

Due to a disk drive running out of space, the slave server for our C01 database has gotten corrupted, and needs to be resynchronized with the master database.  This will necessitate taking the master database offline for the duration of the re-sync, which should take approximately 25 minutes.
This will begin at 11am PDT (about 10 [...]