I'm having the same problem as Ali24!
the file I've run was virus free (my virus defintions are always uptodate) but it disable norton and generated an error so I had to remove it manual in order to reinstall. Now that I've reinstalled it, it seems that the virus is still there and prevent norton antivirus and in fact all norton products from loading (it just close them immediatly).
What should I do.
I've sent the infected file to a friend of mine and asked her to submit it to Symantec.