I dont trust the blackjack which is in the poker software anyway. Dealer is very lucky on it.

I play blackjack in the casino which seems to have more realistic odds...

Dealer makes 21 or 20 about 9/10 times in the poker software. Something isnt right there...

Regarding 8 decks of cards... That really shouldnt make a difference... as the cards (presumably) are shuffled after each hand... Otherwise you could cheat!!!

When online casinos say stuff like they use extra decks of cards it is irrelevent. It just means if your playing 5 hands at once u can get 5 blackjacks, and the dealer can too (if your very unlucky).