The reason the database is running slow is probably because of Norton. I used to have Norton running and encountered same problem. I now use Microsoft Security Essentials, which I have been using on a number of computers for two to three years. No problems so far.
What I suggest is that you uninstall Norton Antivirus, uninstall and reinstall OrangeCD. You should not have any problems restoring backups. Also uninstalling Orange CD would not remove the data files and the database should be available. If OrangeCD runs Ok then I suggest that you forget about Norton and install MSE.