Felu: You get the times of india dont you?
Open the paper to the day after the day this came in the news paper Wait ... you dont get Mumbai Mirror (A supplement only for my city)
Those guys did the test on people ... there was this one 51 year old guy who actually heard the ringtone !!!
Other 30 year olds heard it too (while some didnt)
After knowing this ... best of luck in class
I still prefer to use the silent vibrating mode. kthx