Buddypress Social 1.1.8 Activity Link On Top Menu Could Be Wrong?

I notice that when I click on Activity using Buddypress-Social 1.1.8 on the menu link, it redirects me to http://www.mydomain.tld/wpmu-install/activity/ even though I’m log in as a test user. Shouldn’t it be redirect me to http://www.mydomain.tld/wpmu-install/user/activity/?

Image is at http://blogmyway.org/sb/files/2010/03/activitylinkiswrong.png

When I got redirected to such a wrong page, all the filters there are not working!