The user interface does not display quickly when Symantec Scan Engine starts, log on takes a long time. In some situations, interface does not load at all and appears to hang. This is a known issue with Scan Engine installed on a non-English OS.
Disable Java applet caching on any computer used to access the Scan Engine UI (following applies to java 1.5.0-14 which is required by Scan Engine 5.1):.
To disable Java applet cache
The problem may also be with your Internet browser. Please try the following:
This is also referenced in the Scan Engine release notes.