How many tabs to you have open? Some people have crash problems if they have a lot of tabs. I had 1 force close and a couple of freezes when I had 4 or more tabs. So now I only use 2 or 3 at a time and no problems.
I never have more than two tabs opened at once.
Typically a forum and facebook.
I've noticed the flickering as someone else has stated in here, but I've never experienced a crash after a flicker, it just flickers till I refresh, go to the previous page, or go to a new page.
The crashing seems to be mostly for facebook as well as the app.
As I was typing a different sentence here I realized where ALL of the crashes are occuring. The crashes arent random, as I first thought. Theres a chance that they happe whenever I click a text box to type into. Search friends, send message, status update, chat. It happens there!
As for the app, thats anytime I go back using the back on the bottom left. It seems to crash.
Other apps, I've had no crashes on other apps that are optimized for HC.