BuddyPress.org

I have not heard about this issue before. I would suggest, if you have not tried already, that you disable all your plugins. If the problem goes away, then start enabling the plugins one at a time until the issue reappears.

Also, have you checked your server’s log files to see if something is repeatedly showing up?

Finally, I know that the multi-lingual plugin has a debug mode. That might help shed some light.