Our ISP has informed us that they will be performing some maintenance activities that are intended to further protect the servers from the Meltdown and Spectre security vulnerabilities.
The server software will be modified and then the server will be rebooted.
The scheduled maintenance window is:
11 PM on Friday 16 August 2019 to 7 AM on Saturday 17 August 2019
Note that eValid Commerical License users should experience no actual interruptions of service; we are informed by our ISP that the "down time" (if any at all) will be measured in seconds -- however long it takes the server to reboot.
Regular users of the Software Research websites should experience no problems other than slight delays in serving pages.