Under LW's menu bar, Tools>Options>Sharing>Basic you have the option of sharing incomplete files. That's perhaps the files that were uplding you refered to. Also, with the new version of LW, you can share files immediately that have downlded.

For a moment in your comments I thought you were refering to the "idle" mode where LW closes off one ultrapeer whilst the keyboard/mouse has been inactive for a period of time. This UP is not necessary whilst you're not searching etc. & can be made at least temporarily for other users to quickly connect to the network. Normally idle mode does not affect uploads or downlds. However some people have complained it does, but in my experience it hasn't. As you're probably aware by now, some downlds become stale after a while anyway. Either they've gone offline, or traffic between you & them or their upld slots are being busily used up & queued ... etc.

Remember to know how many files you're sharing, see the no. at the bottom of the main window of LW. And the files & folders you are sharing are listed in the Library window (however the saved files & incomplete folder will be listed whether you're sharing them or not!)

Go to LW's menu bar, Tools>Options & either downld or Uplds > ... to set those options.

Perhaps a more accurate report is found about uplds by going to LW's menu bar, Tools>Statistics.
But this is a general overall report. It doesn't show specific files' popularity.

Do this test: Bug Report instructions & sample image Is the result True/False?

If false, then you have firewall issues! People would struggle to upld from you in that case!