can anybody help me on this matter, its very important, i would be very greatful for any help at all, thanks
Deploying an application to the farm directory does not automatically make your application clustered all it does is distribute your archive across the cluster.
Regarding the class not found exceptions you are going to have to describe your problem before you can get any help.
What is the structure of your ear? what types of components does it contain?
What classes are being reported with the class not found exception?
Where are the missing classes?
What is causing the class not found exception? Are they at deployment time? Are they at runtime? If at runtime what causes them?
Any anything else that might help us to understand your ear.