Screen lock not reliable after Froyo update

[lkillen]

Since the Froyo update (I had to do the RUU thing), my screen lock is not reliable. I use the draw pattern and it used to be there 100%.
Now, if I turn off my screen, (doing so now), turn it back on and touch the screen, it'll tell me the screen is locked. I swipe my thumb down the screen(doing so now) and I am at my main screen. Sometimes, randomly, it'll bring up the dots but more often than not, it goes straight to the main screen.

Is anyone else seeing this?