Extended downtime today

The reason for the changes to the downtime today 11:20-13:00 instead of the normal 11:00-12:00 is that we are installing SNMP extensions to our SQL Server monster machine, this requires a reinstall of sp3.
Once the SNMP extensions are in it will allow is to trend more performance counters over time to better tune the tables/procs and SQL configurations to make EVE even smoother.
Unfortunately we couldn't role-play the reason as the message needed to get a cross.