Did you originally have your downld folder set to default? If yes then perhaps you changed it so your incompletes are a little confused. Go to menu Tools>Options>Saving & press default button & apply button.
I don't know much about stats. If your computer crashes whilst LW is open, there's a great risk that the downld preferences might be corrupted. Meaning that if they were, your incompletes will probably start from 0%.

Some suggestions:

* Tip: Purge the Downloads Queue!

* After opening LW wait 10 to 20 mins before using. Let it settle down 1st.

* Go to LW's prefs>Speed & tick disable Ultrapeer Cap. & press apply button.
* Set both uplds & downlds to autoclear.
* Close all LW windows you don't need open at that time.
* If you're not in front of your comp, then hide LW in the program tray.
* Reduce uplds to about 70-80% or more. Reduce downlds to 80 or 90%.

* Don't use the Resume button on all incomplete files. This can have side-fx such as affect LW's connection quality. This will also stress LW & your comp. If you use Resume/Find sources then just apply it to a couple or so at one time.

* It is only recommended to have one firewall active since 2 can interfere with each other. To configure them to give LW full access see: http://www.limewire.com/english/content/firewalls.shtml

* Do this test: Bug Report instructions & sample image Is the result True/False? If False then you have a firewall issue.

* I would also recommend you use your modem as ethernet & not use the usb interface if you have an ethernet card.