Problem: Huge amount of disk space is being used by elgg

Hi,

I am having problem with elgg;

previously i was using a paid social networking script, but now i have moved to elgg.

The problem is that in past my diskspace was used to max 3gb in one year.

but on elgg my diskspace is used more than 6gb in only 2 months.

I think there is some cron or corn jobs issue.

please help me in this regard

really worried about extra diskspace expenses.