This happens every time DL a large movie file. I suspect limewire is gathering the incomplete information and copying a clean avi or mpg to your DL folder. Limewire will seem to freeze for 2-3 minutes when the file verication reaches 99%. I wouldn't worry about it.

Note that it takes 2-3 minutes to transfer a file this large from one partition to another on your HDD.

Again, this happens every time for me. Limewire always returns to normal. Just be patient...