I'm noticing something strange here. I've got the same problems many people in this thread have, but I've specifically noticed that it often "pauses" right after successfully downloading a file. The UI freezes -- I have auto-clear completed on and the 100% download with status "Complete" will stick around and the whole UI quit updating or responding for several seconds, and sometimes for half a minute or more. It's as if it has to "think" a great deal about each file that has finished downloading. The slowdown often causes it to drop connections, other downloads, uploads, etc. -- task manager does indeed show decreased network activity and increased Limewire CPU usage at these times.