physical memory usage problem

[pockeygz]

First,I explain something importance:

1. My utorrent version is 1.5 built 437;

2. My system is winxp sp2;

3. My system is "clean" - do not have any firewall or anti-virus software.

The problem is:

When I use utorrent,anything all right(by far at least) except it's physical memory usage.I have changed two advance option:"diskio.write_queue_size = 2048" and "diskio.read_cache_size = 20480".When it running,the amount of physical memory usage is about 28M,and the amount of virtual memory usage is about 200M(I have start 3 downlonds),it seems normal.But when I minimize the utorrent's window,the amount of physical memory usage reduce to about 4K,and then increate to normal(about 28M) slowly - of course with many harddisk reads/writes,specally,the amount of virtual memory usage have not change at all(I means during the physical memory usage reduces and increates),it seems that when utorrent is minimized,the physical memory uses by it has been "paged out" by windows,and the case will not appear when restores or maximizes utorrent.I don't know if it's a windows memory management's bug,or a utorrent memory usage bug,or others,I just know it should not be a good idea.

I love utorrent,I just want it would be more perfection.