I think that I found a storage bug.
When I look at a site in the CP it showes:
Storage Used: 33.79 MB
When I do a du --si in /home/sitecom it shows the following (showing only the big maps):
I know that the mysql database size isn’t included in the “Storage Used” in the CP (Will it be included in InterWorx-CP 3.0?) but since ./site.com/html is 68M according to du, I guess that the 33.79 MB value in the CP is wrong.