Tested on Windows Vista x64 and found memory usage hovers between 6 – 9 MB, even after transferring over a thousand files. While it is certainly possible that there is a small memory leak somewhere (though we are not seeing any), it would be hard to miss a 250 MB allocation on startup. You might want to double check that you are reading task manager correctly on Vista.
This post is in the wrong forum. Moving to the BETA forum.