Yes, the Safari loading skips if you closed it while in landscape mode. Confirmed on both my iPhone 4 and my wife's iPhone 4 running 4.1.
But so what? It's obvious what's happening. The phone can't do the same animation because it's "stuck" in landscape mode which is causing the slight hiccup.
SO WHAT?!
It's not "stuck" in landscape mode. Also, after you get Safari to start stuttering like that on launch, it will launch like that from then on (no matter if you're in landscape mode, or rotation-locked.
It didn't happen in 4.0.2. Did 4.1 really add anything that is so processor intensive that the iPhone behaves this way? Not really. That's why I think it's just a bug, but I don't know what it is exactly that is causing it.
I'm still trying to figure out what the other people are doing that "don't have an issue".
If I find out how their iPhone is different than mine, perhaps I can cure the problem, but I've tried every restore method possible and turned off almost every service (even tried airplane mode) and nothing makes it run like 4.0 did.
Turning off Multitasking helped my Camera.app and Photos.app to stop stuttering, but unfortunately Safari runs in the background (even with Multitasking disabled).
So you notice the issue. That's great! It doesn't have to "bother you" for the issue to exist. That's all I'm asking for. Just a confirmation that the issue is real and it's not just me.
To the people who say that their iPhone is perfect. It may be perfect to you, but to me, it still skips.
Some people are perfectly happy watching SD content stretched across their widescreen HDTVs instead of preserving the correct aspect ratio, but I like to watch my TV in the same format the footage was designed for. Does it mean that most people won't be bothered by a stretched out image? No. Does it mean that it's an issue that doesn't exist? No. That's basically what's going on here.
Just because some people don't care about my issue, doesn't mean the issue isn't there.