The ZK team has moved the issue tracker from sourceforge to our own new system at http://tracker.zkoss.org/. The issue tracker on sourceforge.net will be disabled starting next week, please remember to adopt to the new system.
Users are able to log into the new system using their ZK forum account. If you do not already have one, please register at http://www.zkoss.org/forum/
Our new system on Jira introduces a new and very powerful voting system (illustrated below) enabling users to vote up for a desired new feature or a bug that other users also have problem encountering.

Using this system, the ZK team can now easily identify the most wanted features and the most concerned bugs and will use it as a reference for priority judgement.
Apologies for any inconvenience and Thank you for your corporation.
Regards,
The ZK Team