One of the my iPhone 4 with iOS 4.3.3 jailbroken has some issue with the touch/multitouch input... You can see a demostration here...



To fix this kind of problem, you can simply disable the Multitask Gestures in Settings.app... Hope this is helpfull for you...

Try restoring it. I've had similar issues with my ip4 and restore usually fixes it.

Did that fix it? I've never even heard of this problem nor have I experienced it on my iTouch4.

Hmm did you delete any launch daemons? try restoring it or re-jailbreaking it.

Hmm, I had a similar problem with my iPad 1st gen on 4.3.3 jailbroken.

The solution for me was simple.

1: Goto Settings > General. Turn of Multi tasking gestures.
2: Quit All Apps, also remove from multitasking bar to remove background processes.
3: Shut down iPad by holding the power/sleep/wake buten until you can slide to power off.
4: Wait for it to completely shutdown.
5: Don't turn it back on again, instead:
6: Get a cleaning cloth/blanket and put some glass cleaner stuff on it.
7: Now clean the ipad or iPhone/iPod screen until it shines and look like it's brand new again.
8: Dry it with a clean, linnen or cotton cloth. Make sure nothing of the cleaning agent remains.
9: Turn on the iPad/iPhone/iPod Touch again if you're sure the screen is fully dry again.
10: Go back to Settings > General. Turn Multi tasking gestures on again. Now everything should work again.

Why does this work you might ask, well....
My guess is that because of the intensive use of your touchscreen, after a while it might not be able keep distinguishing fully between individual fingers
and between individual swipes, pinches and other motions on the screen, because of the several layer of skin/finger fat/fluids from touching the device screen.
And be turning of multitasking gestures, cleaning the iDevice, and turning iton again, you're actually resetting the touchscreen receptors.
And because you have cleaned the device in between turning off and on again, it will read touches as new again, and swipes and multiple finger gestures are read as new and distinct again.
Why is this important? Well, I don't know whether you know this or not, but iOS actually keeps a touch profile based on the users fingers on the device for more accurate gestures. But ofcourse if there's a lot of finger grease on the screen, it can't properly read your fingers until it is cleaned.

Anyway, that's how I figure it is, becasue for me the above routine helped. So I hope it does the same for you.

PS: After you've cleaned the screen this thoroughly, you might notice that for the next few days, swipes and maybe even touches and taps might feel a little bit stiff or rough.
ie. feels like you have to put in more effort to swipe and moving apps around on the homescreen might feel akward.
This I guess is a result of Apple's oleo-phobic (anti skin oil) coating on the screen, trying to prevent your skin oil/fluid from sticking to the screen.
This effect will subside with in a week, because the screen will build up an initial layer of skin grease/oil/fluids. after that initial layer is build up, the swipes and touches will feel smooth again.
(that is until there's again to much of the grease build up it starts affecting swipes/pinches and other touch motions again)

So I hope this helps you!

Good job! ;D Thanks!