Porter boxes offline 26/27 September

Hi,

IS would like to upgrade the porter boxes from maverick to natty, which should make them more stable.

This will require a reboot, and the upgrade may cause issues for some tasks, so please be aware and plan accordingly.

The plan is to start with jenipapo at 1900UTC on Sept 26. The others (guinep, habitat) will be done in the hours following that, or starting at the same time on Sept 27 if they can't all be done in the first block.

Thanks,

James