Can't get userid clicking to a From field

[hopalong]

It contains "2 P2P users" - there's only a little point in the lower left corner of the field when I click there. This point remains there even after I select a new line (table view) The file seems to be junk, Bitzi says "house music ministry of sound 2009.mp3". What knows LW, that doesn't give me a userid, but doesn't know that it's a spam/virus/junk ?

Thanks