APERTURE: can 350 GB of photos create a 100GB library when files are not moved to library?

I just moved from LR to Aperture and this software is causing me only headaches so far.

I just can get a grip on it.

Anyway, here is the recent problem:

I just moved some files around from one USB drive to another (which is the proper photo files drive)and asked Aperture to import these files into the Aperture library.

Of course I have the option checked to keep files at their current location (external HD).

Yesterday I had 70GB free space on my internal HD and today just 3 GB left.

I checked the Aperture library file size and it is a whooping 100GB from yesterdays 14GB.

Also Aperture trash has 20011 files which cannot be removed by choosing Empty Aperture Trash.Is there a way to actually see these files?

My System Trash is empty.  I am using OS 10.7.5 and the latest Aperture.

How can I checked if Aperture maybe somehow moved or copied the files into its Library?

Please help if you can.  This is really frustrating.

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Andrzej
http://lowflyingbananas.zenfolio.com/