in the wiring process, I removed the ground wire from the light fixture because my home is an old san francisco victorian and neither the ceilng junction box nor the wall switch box had any obvious place to hook a ground to. The wiring in our home seems about 50 years old at least.
i also replaced the dimmer switch with a high quality lutron dimmer. That too had a ground wire but I just capped it.
Any ideas as to how i can find the cause of the flickering?