once you unhide files/folders, you'll find them here
c:\documents and settings\YOURNAME\local settings\application data\mozilla\firefox\profiles\7zns8ksj.default\cache
the 3 files were:
463F8EDBd01
6BA17E6Fd01
DDAAAE12d01
what symantec says about it
Packed.Adware
Last Updated on: March 17, 2005 09:41:26 PM
Type: Adware
Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP
Risk Impact: High
detection
# Definitions (LiveUpdate Weekly)
November 17, 2004
# Definitions (Intelligent Updater)
November 15, 2004
This risk can be detected only by Symantec products that support security risks. For more information on security risks, please go here.
summary
Behavior
Packed.Adware is a generic detection for adware programs that have been processed with software packers.
Symptoms
Your Symantec product detects a file as Packed.Adware.
technical details
Packed.Adware is a generic detection for adware programs that have been compressed using software packers. Software that has been packed is often reduced in terms of file size and must be unpacked before the original file can be executed. The unpacking procedure is performed by a decrypting loader that decompresses the original file before executing it.