Comment 9 for bug 525999

I can still reproduce the issue after fixing the bug above. When I start phatch it will take 20.2 MB of memory. During the processing of the first and second images it will jump to 163 MB even though each one of them is 3.5 MB. Then the memory usage will increase quickly with each image to take all available free memory. I canceled the image processing when phatch was using about 255 MB, some memory was freed but phatch is still using 194 MB. I closed phatch without saving changes and interestingly it took about 10-20 seconds to close during that time the memory usage increased as well to about 220 MB.
This laptop only have 500 MB of memory not 2GB as I reported before. But this increase of memory makes it impossible to process big images even though the sizes combined should fit into memory.