Besides many minor fixes and improvements, the latest versions contain the following major changes:

VirusBuster for NetWare Servers:

• New virus scanning engine (4.5.3): the latest engine uses version 10 virus databases and contains many improvements, which aim lower resource usage.

VirusBuster for Mail Servers (GroupWise):

• Improved spam detection.
  
• In the quarantine, every e-mail will have an hour and minute property besides date, sender and subject so that it is easier to find quarantined e-mails.