all,
Several ReactOS services will be moved to a new server next Friday. As
this migration highly depends on our hosting provider, the downtime may
be up to 24 hours.
Affected services include:
- ns1.reactos.org
- playground.reactos.org
- jira.reactos.org
The upgrade will improve reliability and adds resources for additional
services in the future.
Of course, you will be informed once the migration is over.
Cheers,
Colin

原文地址：也就是换新的服务器了。
www.reactos.org/archives/public/ros-dev/2012-November/015875.html