Scrolling menu is very difficult!

Sometimes I can succeed scrolling, other times move to deeper menu as shown in this video-clip:
http://www.youtube.com/watch?v=gPOeIMQGySY
In this clip, the scene of pressing button, it is the "return" button.

Could someone tell me how to scroll the menu properly? Thank you!!

setting - > calibration

factory reset or flash os

Thank for quick advise! I guess I intended to write:
「setting - > touch panel calibration」

Thank you for quick reply!

This movie was shoot after "Touch panel calibration". I've tryed the calibration again and again, though, this problem still remains.
I emailed this problem to AINOL two times, they have not responced me as yet....

Anyway, you are so better than the AINOL's customer service, thank you again!

I've been annoyed this problem since the first time of turning on the power at the new novo5.
So, I'm not in a mood to follow your these advice.

My one is:
Android version: 2.2.1
Firmware version: v2.21_0511.01-M_CN@20110617
Kernel version: 2.6.25_(V2.2_0_502(W8)_D2_R_A18@0617)

A rumor says, novo5 employes "感圧式", not "静電式". If so, only the design for touch sensing isn't optimised for 感圧式.

The thing I can do is only to wait for the firmware updation....

Finally I mastered how to scroll properly on NOVO5.
Please watch: http://www.youtube.com/watch?v=adq_4YQ85EY

The knack to scroll:

1) To press the menu item, so as it flashes.
2) To slide the pen, AS KEEPING ON PRESSING, within 0.5 second.

It might help you to imagin the operation of the writing brush on the calligraphy.

Good luck!!