After waiting patiently for the Admit Card with no luck, I called Karachi University today and asked them when the examinations will start. They confirmed the following on phone:
1. Exams will start from 5th July, 2006 onwards
2. Duplicate admit cards are being issued by the external examination department
I would suggest that instead of taking the risk and waiting till the last moment for the admit card, it would be better to get a duplicate admit card issued. Be sure to take photographs, registration card, etc. with you – because you never know! I will be going to get a duplicate card issued tomorrow morning and will post details here about my experience. Best of luck!
Edit: For further discussions about the University of Karachi you can visit: http://karachi.pakstudents.net/