Well, I'm glad you've been watching things, that's the first movement to figuring out what you have and what you can do about it.
Try planting some high nectar containing flowers like Primulas, baby blue eyes and so on to attract more insect predators to your gardens as well.
Read the Beneficial Insect Thread in the Permaculture Forum to get ideas of more plants you can put in your garden to attract other beneficial insects that will eat the white flies and other insects.
I have no idea what the fuzzball insect is but, it certainly sounds intriguing!
Feed the soil, not the plants.