Edit profile link takes me to Activity page in new installation

Hi, I am new to elgg. I installed 1.8.1 and followed the instructions carefully. While the installation was successful, something strange was happened. When I clicked on the edit profile link (from multiple places), it always took me to the activity page. However, the edit avatar link worked just fine.

Not knowing what to do, I deleted the entire installation and repeated it. But the same thing happened the second time also. I don't understand why this is taking place. Can anyone help?