whoa! Are you sharing your entire home library or something? That's way too many.

In LW, switch to the Library Panel and see what folders you are sharing. Click on the ones you don't want to share, and use the File Menu "Stop Sharing Folder" command.

You can share that many, but it doesn't sound like you intended this. btw, LW on Panther will take about 1 hour to prepare 10 GB of files for sharing the first time ("hashing" the files).