From a note Citrix sent to their channel:
IMPORTANT CHANGES to the license management system for MetaFrame Presentation Server 3.0 and MetaFrame Conferencing Manager 3.0!
With the release of MetaFrame Presentation Server 3.0 and MetaFrame Conferencing Manager 3.0, Citrix introduced an improved licensing management infrastructure, which requires the deployment of a license server. We've been getting some very clear messages from our customers that this new license server could be a single point of failure and a potential vulnerability. In the event of a license server failure, we currently provide a 4 day grace period that permits customers to continue using all licenses. While this addresses certain failure scenarios, not all customer requirements are met.
Effective August 19th, we will be increasing the grace period from 4 to 30 days. This new grace period provides an extended time to resolve any fault conditions, whether they are related to license server hardware, license server software or network failures. This approach reduces customer concerns about losing MetaFrame Presentation Server as a key part of their application infrastructure by allowing all users to continue to have uninterrupted access to their applications during the grace period.
Customers that have allocated license files for MetaFrame Presentation Server 3.0 or MetaFrame Conferencing Manager 3.0 prior to August 19th will need to re-allocate and download a new license file to activate the 30 day grace period. An e-mail message with information and instructions will be sent directly to these customers later this month after the modifications to CAS have been completed. This change does not affect product versions prior to MetaFrame Presentation Server 3.0 and MetaFrame Conferencing Manager 3.0.
This is a very good thing. The fact that you can't configure a backup license server in MetaFrame Presentation Server 3.0 is a major limitation of the product, and several large companies refused to deploy it until this problem was fixed.
This is turning out to be a great week for Citrix!