considering FF is using about 400mb for me right now with things open such as nod32, steam, utorrent, and a few other things, im using around 1.8GB. for everyone posting their memory usage, it only makes sense to get results of your normal usage. having nothing running it pointless because when is anyone running nothing? for some reason it seems as if win7 is using more memory than vista was for me. 4gb is just not enough anymore, thankfully i will have an i7 and 6gb ram in about a week.