We're happy to announce the availability of Zimbra Collaboration Suite 4.5.10.

There are 70 Bugs/Enhancements in this release.

Some noteworthy ones include:
Perdition security fix noted in the Forums Announcement:
Bug 21129 - Possible memory leak in calendar js
Bug 20568 - Clamav update to version 0.91.2
Bug 21351 - Outlook will generate a Visual C++ runtime error
Bug 20285 - iSync: Duplicate Calendar entries

We encourage all users to upgrade to the lateest release to take advantage of the enhancements and bug fixes.

Network Edition Customers can find the Release Notes in the Support Portal: and can find the downloads here: http://www.zimbra.com/products/downloads.html

Open Source Edition Customers can find the Release notes here: http://www.zimbra.com/community/documentation.html and find the downloads here: http://www.zimbra.com/community/downloads.html

As always, we strongly recommends that users perform a FULL backup before and after the upgrade.

Best,
The Zimbra Team