OS X 10.6.3 has been put on the Apple Software Update Site. Here is a list of the fixes and updates that Solsis customers running Mac environments may benefit from

• An issue in which the Finder reports a -36 error when copying directories to a drive formatted as FAT32.
• An issue in which shadows in PDF of Aperture book are black instead of gray.
• The reliability of certain third-party USB devices.
• The Accounts preference pane can now limit login to members of groups hosted by a non-Apple directory service, such as Active Directory.
• DNS server ordering as specified in Network Preferences and DNS reliability.
• General reliability for wireless connections.
• Improvements to 802.1X reliability, including closed network connections , and WPA2.
• An issue that could cause the system to become unstable or unresponsive when bound to an LDAP server using SSL.
• An issue in which the 802.1X Login window Profile is in place, but the wireless network is not available, directory authentication over Ethernet will now succeed.
• An issue that could prevent saving files from Microsoft Office 2008 to an SMB server volume.
• Issues copying, renaming or deleting files on an SMB server volume.
  clear-text authentication enabling to an SMB file server.
• Changing the invitation list for a single instance of a recurring event will no longer “un-book” the location of the meeting.
• An issue in which new invitations on a Microsoft Exchange server might not appear in the Notification pane.
• Properly showing recurring Microsoft Exchange events which have a set end date.
• home directory synchronization when the home directory is stored on an SMB file server.
• properly warning mobile users in an Active Directory domain about upcoming password expiration.

There are many other updates 10.6.3 has a lot of updates in.  I would head on over to here to see the full list of updates.

For Solsis customers reading this please contact the helpdesk on 0845 600 2552 if your concerned or would like assistance.