I have Shareaza [edit: version 1.0.2.2] running in the background for 5h30m now, yet i only got one single upload request, and that was for an extremely rare file (a french rock band from the 80's)...i'm sharing lots of music, most of it is far more popular, yet noone uploads it. this is definitely not normal, nor does it happen with any other gnutella servent. using gnucleus i have at least one upload per hour (that's not much either, but i'm on ISDN). i suspect there must be some bug in the upload code, i see no other explanation.