Yes, it is very random, but I don't ever find it "speedy"... just a variation between slow and really really slow.  Either way it's a PITA compared to other sites, so I voted "very slow".

Also, is the voting page supposed to change after you cast your vote?  I picked my choice and clicked vote, but nothing seems to happen; the page remains the same.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi