Do you know what mickjapa? I wondered where sdBot came from!! Surely though if it was "installed" with Tiscali then it will return as soon as you boot up into normal mode? This sdBot would, I suppose, be targeting all P2P processes? Or maybe just sniffing out Gnutella? Your right also about the original Tiscali agreement being totally unlimited broadband, obviously when their boffins came up with that advertising campaign they were totally oblivious to how many actual P2P users there were on the planet.
My advice to Tiscali?? If you can't "Hack" it get out of the kitchen.......