Yep, I agree. Everything after LimeWire 1.7 is crap; plus the newer versions have ads, plus spy ware built in. Just slow, clunky garbageware.
But, LimeWire 1.7 has been great and was a major improvement over Aimster, which would crash constantly in the middle of transfers, resulting in songs that never finished. I'm sure Aimster has joined Napster in the grave yard of dead technology. LimeWire will be next.
The good thing about Limewire for now is that it's based upon an open, public network. There's no way they can prevent 1.7 from working or "lock it out" of the network.
Just be sure not to delete your old installer and old version if you want tot est the newer version. But, trust me, don't bother.
I'll keep my eye out for Morpheus Mac.