Packed files "false positive" problem

Hi!

Using Norton Antivirus 2010 version 17.5.0.127 installed on Windows XP SP3, i found the following issue:

all packed excutables are automaticaly become "infected" and being deleted by Norton Antivirus.

How to reproduce:

1. Take notepad.exe from c:\windows\system32 folder.

2. Pack it with the UPX or any other well known executable packer.

Norton Antivirus will delete the packed file without a prompt.

 

Since I'm professional software developer i need to pack my executables sometimes.

And now I have to use an older version of Norton Antivirus that seems to be a security risk for me.

What else can i do?