My "firefox" has auto-spell-checking, too. (Though I can't say it launches very quickly.) If you're out on a trying-new-browsers rampage, be sure to also check out firefox.
I haven't tried Google Chrome yet -- I'm waiting until they get a Linux version -- but it definitely looks promising. I was reading the comic, too, and it's pretty good.
BTW -- did you guys know that it was released early because of a media (comic) leak? http://www.news.com.au/heraldsun/sto...-11869,00.html
That might be why it doesn't appear to be fully stable yet.
