Found this post after searching Google for "uTorrent using 1.6 gb memory." I'm using 1.8.2 on Windows 7 x86 beta, and I also appear to be getting a memory leak. When I check uTorrent after leaving the computer on for a while (generally overnight), it's using at least 1.6GB of memory. I can't bring it up from task bar--I have to end the process in task manager.