Android default screenshot??

Today, I came here with an android phone trick to capture a screenshot without any applicaltion.
Just press back button and menu(middle) but together after that screen flashes and text flashes (screenshot captured or something similar to it and the location of saved sreen shot ) default location is screenshot in sdcard.
Tested: Samsung galaxy ace with gingerbread 2.3.4.
If it works for u, u can comment here
Source: Self owned galaxy ace.