I suppose that by "fake downloads" you meant files that seem to be what you wanted, but are not. During the last few days I am getting them. It seems the cycle is as follows:
1. one selects a file type, say video
2. one types in one or more fields for IDing the file, say JeLo concert in San Juan
3. one pulses the search button
4. one gets a number of normal files with different names that somewhat match one's request, and a few files which are exactly what one typed, some times even all capitalised and with letters separated by a "_", so that one does not miss them. Normally this latter type are, of course, just what a LW user would dream of finding:
- of high quality (4 stars),
- small size,
- with many copies and
- through a highspeed connection, T1 or better!

I suspected this for a while, but today I confirmed it when I invented a title and author for a video file with my maternal grandmother's maiden name and birth place. Indeed I got a few seconds later exactly what I had typed in the search fields:

3 (4 stars) 33 apple.laf.AquaFileIcon@4172df* pamplona ainciburo wmv 106,8 KB T1

3(4 stars) 29 apple.laf.AquaFileIcon@4172df* P_a_m_p_l_o_n_a _A_i_n_c_i_b_u_r_o wmv 106,8 KB T1
*apple.laf.AquaFileIcon@4172df is the code for a wmv file in Mac OS X version of LM 4.8.1

It is clear that there is, somewhere in the LW network, an application that fabricates fake files with whatever searchers want. These fake files, normally load webpages with porno or other unwanted materials.

What I do currently is to look carefully to a file characteristics before I download it. But I suppose there are better and surer ways to block these files. Has anyone had experiences with this?