Here is what I came up with across the 3 most recent builds of uTorrent: 2.0.3 - most recent stable build Read Cache - 11-13MB out of 13-14MB Write Cache - 19-20MB out of 32MB RAM - Physical - 60-75MB 2.2.20896 - most recent of this version Read Cache - 11-13MB out of 13-14MB Write Cache - 18-20MB out of 32MB RAM - Physical - 105-110MB 3.0.20905 - most recent of new builds Read Cache - 0MB out of (high disk activity reported by this build, no read) Write Cache - 34-35 out of 32MB (this seems like the issue, though not sure what to make of it) RAM - Physical - 285-305MB (and rising, with no downloading or uploading happening, just disk thrashing, not sure if that is the right word or not) From what I can tell, so far, and I do take into account that these are are alpha, betas and stable builds. The stable release seems to download and upload great (about 15Mbps/2.5Mbps), the 2.2 release seems to go mostly okay (about 7Mbps/800Kbps-1Mbps) and the 3.0 release doesn't seem to download anything. All of these installs have the same exact settings, nothing changed, added or removed, etc.