I figured you were signed in as Admin. I imagine I won't be the first to tell you that Norton reaks havok on OSX! I have not had a personal experience with it, but remember reading that almost everyone at MacRumors says to never buy it and have it installed. I would uninstall it personally, but you might try first disabling it...you could always reinstall it later if need be or desired. Since there are not OSx viruses as of yet I think you are pretty safe without it.
good luck.
I know palm tends to keep their support pretty secret so word doesn't get out so I would call them if this doesn't work. Their phone support is decent, but they don't seem to put many things on their web support that they should.
For instance, did you know that if you have a palm zire 21 you will(most people) lose all your data if your palm comes within two feet of a cellular phone operating. They don't mention this on their web support but in phone support they tell you that is why you are losing your data and to keep it two feet away from cell phone. Crazy if you ask me- the Virex thing is another one they don't talk about it web support, but over the phone they know it is a common thing it conflicts with.