I have a problem with the downloads not resuming too, but in my case it happens after LW shuts down (normally), I restart my computer, the "old downloads" are loaded, but suddenly they are zeroed in the "Incomplete" folder and the download begins from start.
Isn't it supposed to re-start from where it stopped???
Just lost over 300MB downloaded for one file and ~400MB for a second one - just because I had to restart my machine after some software update!
Am I missing some settings, or is it just crappy software? (I bought the "Pro" version!).

Another thing is, that if for some reason my computer crashes, usually what follows upon reboot is the "Old downloads can't be loaded" message, and I lose everything on my download list. Isn't the "downloads.bak" file supposed to provide enough info to recover every single file from the "Incomplete" folder after such crash, eventually losing only the portions downloaded between the state recorded in ".bak" and the one from (possibly garbled) ".dat"???

Thanks for any help.