From Fedora Project Wiki
Samba (Windows Compatibility)
This section contains information related to Samba, the suite of software Fedora uses to interact with Microsoft Windows systems.
Fedora 10 includes samba-3.2.1. This is only a minor release over the version included in Fedora 9, 3.2.0, so users upgrading from Fedora 9 should see no specific issues. However, users upgrading from earlier versions of Samba would be well advised to carefully review the notes in the samba 3.2 release notes (http://samba.org/samba/history/samba-3.2.0.html), as well as reviewing the news article on Samba 3.2 (http://news.samba.org/) which highlights some of the major changes.