[RbnJrg]

As I said in previous posts, I'm working under Windows 7 x64. I made some experiments to see what is happening with the memory managing of Sigil:

1. After opening Sigil (no file loaded), the memory used by the program was about 120 MB.

2. After loading an .epub of about 1MB with 30 .jpg images, Sigil reported to be using about 220MB. Till here, all ok.

3. After doing minor changes in the .epub (changing a number, or changing just a simple word) Sigil reported to be using about 250MB.

4. After saving the .epub, the memory used was of 260MB.

5. I started opening some tabs from different .xhtml files present in the .epub, and also the .css stylesheet and after that, the memory used by Sigil was of 360MB. I closed all tabs except the .css stylesheet and the memory used was the same.

6. I opened again just one of the tabs previouly closed and the memory used was the same.

7. I closed the tab I opened in step #6 and I opened a new tab (never opened yet) and the memory used raised: 370MB.

8. Again I made minor changes in the epub and the memory used raised, 380MB.

For some reason Sigil is not freeing memory, specially after opening/closing tabs.

EDIT: I worked with a clean installation of Sigil.