At 12th January 2010 ERP5 version 5.4.5 was released. Revision used to generate this version is 31700. Please read UpgradeNote.
Release is available at http://www.erp5.org/dists/release/5.4.5/
This release contains mostly bug fixes and small improvements.
The most important issue fixed was related to Alarm Tool:
Known issues
Please refer to ReleaseNotes5.4.4 Known issues section.