brash_stryker said:

I agree that they probably shouldn't cast shadows and I think any explanations there have been to explain that they aren't actually made of light were only invented to make up for the "error" which was caused by the limitations of filming in the late 70's.

The glowsticks comparison doesn't really cut it as these are physical objects that happen to have light produced inside of them. The lightsaber blade is not really a physical object but rather a beam of energy. Last I heard, a laser doesn't cast a shadow and that's what a lightsaber was originally called - a "laser sword"

Whether it's practical to remove them, I don't know. Adywan is ridiculously extensive in his fixing of errors, but as far as I remember, he didn't remove the shadows.

I'm sure it was the limitations of the day, but for it to happen in the prequels is a testament to the laziness of Lucas. The man has the best stuff, and he just slaps it all together. Lucas needs to be a hungry filmmaker again.