Since your incoming is false, suggests something is partially blocking LW.
Some questions:
1. Connection type,
2. Modem & router brand name & model numbers,
3. Where are you trying to connect from (home, school, work, etc.)?

4. Go here: http://www.u.arizona.edu/~trw/games/nat_or_not.php And ignore everything except what it says in the grey box. The ONLY thing I want to know is does it say you are using NAT or not.

* You can try disabling ultrapeer capability for the moment.

* Make a note of your LW Preferences & then quit LW. Now delete your LW Prefs called .limewire & found here: /Users/your_username/Library/Preferences/LimeWire


Updating online seems to occasionally cause issues with some people. Using the standalone installers seems to fix this (even though you may already have that version.)

You can try the Jum build & see if this does any better. Note this is a beta of a beta. But it does have some differences to the regular LW.