Uploads - people trying to upload files i don't have

[TomD22]

Although i am sharing 550 or so files, many or which show very few results when i do a search for them and are therefore quite 'rare', i almost never get anyone uploading from me, despite having a fast DSL connection. This seems strange, as when i have WinMX running, sharing the same files, i usually have two or three uploads going at any one time.

However, what i really want to know, is why so often Limwire tries to upload files from me that i do not have - a song by the corrs, for instance. It then says "file not found", of course. This happens really often, and doesn't seem to be affcted by me disconnecting and reconnecting (i tried this, because i read somewhere on here that i might have the ip address someone previously had used on Limewire, and that it therefore might think i was them, with their files).

I know uploads are possible - occasionally one happens and works, and the bug-report thing in options says true where it should (ie i have sorted my firewall and stuff out).

Anyone got any ideas why this is?