My account is suspended for high system usage. But i dont know what is taking high usage. I have no cron jobs running. So i dont know whats the problem.
Ah, that could be the problem. Joomla! is a notorious resource hog. If your two installations of Joomla! were loaded at the same time, that could max you out. Even 1 installation with a lot of mods installed will cause this problem. Is there a way maybe you could make your site run a little less heavy?