It's really odd that your incomplete folder is inside your shared folder. You should change this to stop this problem, as this is not a normal (or protocal compliant) setup trait for LimeWire. While Lime is not running, cut the folder from the Shared directory and paste it somewhere else, preferably to the same directory where your shared directory is (but NOT inside it). Then, uninstall LimeWire and then re-install it. LimeWire should automatically find the new location of the Incomplete folder, and will use the new location instead of the old one.

Make sure to post again if this doesn't work or a new problem arises. :-)