What are your details?

OS(Win XP etc)
LW & Java version (help > about LW & you'll see)
Firewall you're using
Modem/router brand & model
ISP
Connection type (DSL etc)
Where you connect from (home, school etc)
Are you sharing a connection with other computers
Is this your first try with LW

Do this port test & see what results you get
http://www3.limewire.com:6346

Within LW, go tools > options > bug reports > view example. Scroll down to 'recieved incoming this session'. Is it true or false?

Read this sticky, it's got heaps of advice & info about connection probs
http://www.gnutellaforums.com/showth...threadid=51357
Make sure your firewall's configured properly & go through the stuff about UPnP & port forwarding