Is it OK to use system registry cleaners such as Norton Systemworks on my system?
No, it’s not recommended because registry cleaners can remove important entries that are needed for FileSphere and other applications, to function properly. Registry entries don’t always look as if they are related to an application even though they are and unless you know exactly what each registry entry is used for, you can never be sure that you are not deleting something critical to one of your applications.