Z-Push 1.5.6 has been built at RPM Fusion for Fedora 17, 16, 15 as well as
for Red Hat Enterprise Linux 6 and 5 - and should be pushed to the testing
updates repository within the next days at latest. Here is the full list of
changes in Z-Push 1.5.5 :
Changelog Z-Push 1.5.6 
- Added: Configurable $timeout in HandlePing (Mantis #528)
- Fixed: A task created on a mobile doesn't appear in Outlook Today view,
the due date must be at 12:00AM straight (Mantis #525)
- Fixed: Sending an email the "from" Field in the maillog is and not real
email address (Mantis #497)
You should be able to update to Z-Push 1.5.6 by using
yum update '*z-push*'
on all Fedora and Red Hat Enterprise Linux releases once it's pushed to the
repository. If you should find bugs or issues, please fill a bug report in
RPM Fusion Bugzilla as described here:
Your feedback is very much appreciated.