There aren't really any corners that repeatedly catch me out, it's mostly the kerbs on some slow corners that are obviously programmed to be destabilising.
The last chicane at barcelona is horrible. I can get it right, but it took a bit of practice. I used to always try to carry too much speed in, then realise the corner was tighter than i thought at the last minute. Why did they neuter the best part of the track? It wouldn't be so bad if the chicane wasn't so tight.
Initially, my problems were with me trying to replicate real life. Flat through turn 1 in suzuka just isn't really possible in the game. Once you accept what is possible and what isn't, things get a whole lot easier.
Also, the braking distances are longer in game than in real life. Don't think this was an error from codemasters though. Think they did this deliberately to make the game easier. The longer the braking distance, the more chance you have of overtaking someone. I don't have a problem with this, but would like a pro mode in f1 2011.
The game definately rewards those who play it a lot, which is a good thing. Not many games do that, save for giving you some shiny new trinkets. F1 2010 forces you to increase your knowledge of the tracks which in a way is like real f1. It can be quite rewarding.
Edit
The first left hander at Catalunya, just as you are going uphill catches me out, I run wide quite a lot.
Turn 2?