Try this program for the fh2 release sgt krotchrot ;)
Realy small program, realy low mem/cpu usage.. I have been seeding in ~850kB/s and i didnt notice any lag what so ever.. 0-1% cpu usage and about 4MB ram usage
I uninstalled Azureus and Java after the download. They take a crapload of space and my computer has prompted several times that it's low on virtual memore. Dunno what it is though.