Science Direct again

From Science Direct:

Everyone who has been involved with system upgrades in other contexts will not be completely surprised to learn that the upgrade and reinstallation of Science Direct's core techologies last Saturday encountered some unexpected problems. As a consequence, the upgrade was aborted, the system was reset and we again need to close down the system this week-end to carry out the work.

With great regret and with the most profound apologies, therefore, we announce that ScienceDirect will be unavailable again tomorrow (Saturday, March 3rd) for approximately 9 hours starting at 06:30 AM EST (11:30 GMT). The changes are necessary to improve the performance of ScienceDirect and to ensure a high level of reliability in the coming years.