To Agg Karan:
Interesting experience that you share with us. Please research the following link, you will see that history repeats itself and it is the sharing of experiences like you just did, that may prepare others to react properly and timely when it is their time to deal with a like occurrence.
Use Google to search for
Transport Safety Board of Canada AVIATION INVESTIGATION REPORT
A04O0020
or use this direct link
Transportation Safety Board of Canada - Aviation Investigation Report A04O0020
Safe flying to you!
To people who still think that certain things happen only to Airbusses and not to Boeings, a few quotes to capture their attention ...
Quote
The autopilot pitched the aircraft up to 29.5º in an attempt to maintain the ALT CAP profile and, as a result, the airspeed decreased further. This attitude was maintained until the stick shaker activated and the flight crew took recovery action.
Other finding:
The autopilot was functioning as designed during the occurrence.
Unquote
Proper understanding and use of automation is required on all types of aircraft.