Wish I could agree with you. I've been using Opera for years but it started freezing a lot when I installed 9.64. I'm on 10b3 atm and that was just as bad until I got some advice on the Opera forum (and some abuse from a most unhelpful moderator!) and now it just freezes occasionally.
FrostBite....Sounds like you have a serious issue there!
I would be inclined to install the version 10 as a NEW install and see what happens.
If you're still having problems, then it may point to another serious issue with your computer such as a virus, spyware or the like.
One thing I have seen with both Opera and FireFox (refuse to run Internet Exploder) is that if you run several anti-Virus programs, they fight amongst each other and your browser is the victim.