Just a few observations: Hope these are clearer--I tried
-Browse host on myself only shows 3000/9713 files.
-LAN transfers of 500 KB/s (sweet--but sure messes up the averages in stats).
-With IP unforced, self and router show as UP's in connection pane. Firewall off on both machines. Decided to set both LW's with IP forced (still using different 5 digit port numbers).
-magnet for jum209 worked: built up to 8 sources, but didn't find the two being shared on my LAN. A search did, and the magnet entry then began downloading
-browse host on LAN shows 4 yellow stars and speed column as green "cable"; search results show 4 blue stars and green "ethernet"
-more than usual permissions repair needed after software update installed the new Java 1.4.1 update
-sharing 9713 files with most GUI options turned on uses ~156 MB memory (430 MB virtual); processor % really difficult to guage when jumping from 17-88% (1 second sampling). Browser and mail service unaffected.
-checking "Advanced " in stats returns Console:
/Applications/LimeWire/LimeWire.app/Contents/MacOS/LimeWire: kCGErrorFailure : *** Parser error line 1, character position 52
-both machines quickly and smoothly run up to ~3500 hosts (32 UP->UP; 30 UP-> leaf) but should ALL ever be incoming?
-Can't judge whether running two UP's on the same LAN helps others. UL speeds set to unlimited, 1 spot pp, 3-5 available.
-seeing some nice steady upload speeds to outside clients >50KB/s. YES!
- Can't close the "about" or prefs window if the dock is used to bring LW to the fore.
-LW resumes connections, DL's and UL's after force quit as if nothing happened. The .bak sure works well!
-Screen redraws are very quick, but switching panes lags somewhat.
-there's a LW 3.4.5 user (3 star modem) returning results based on only 1 of 3 search terms. Hacked?
-Both the jum and the official DMG's installed just fine-- the zero g installer was getting really tedious.

Bottom line--sweet! Thanks all. Looking forward to the magnet and dock fixes and whatever more goodies you have in store for us to test (private magnets? connection quality diagnostic? NIO?)