Have problem with activating buddypress

I have a problem with activating buddypress. I am using WP 2.8.4a and Im trying the activate BuddyPress 1.0.3. I uploaded all the buddypress files to "wp-content/plugins" and try to activate from wp cpanel but it doesnt work. When I click the activate the page is loading and hold loading. No process. I wait 30minutes but nothing happened. I just cant enter my wpmu website. And I delete the buddypress. Now everything is normal but how can I install buddypress correctly?

Thanks for helping