Correct, there is a little brick wall.

I've tried to load that page you linked, but it won't- it just says 'contacting "www3.limewire.com"' and sits there.

I am running OSX 10.3.9 on a Mac Titanium G4 Powerbook.
Re: firewall - have enabled gnutella to fileshare (if that's what you mean?)as well as i-tunes and personal.
There is 13.14 GB (out of a total of 27.94) available.
Not sure on RAM, I'm afraid... not sure where to look!

The connection may be the issue - the pub across the road from me has wi-fi, and it's handier for me to use theirs when I'm using my laptop. For this reason, I don't know who the ISP is etc!
I am connected via the built in Airport card.

I only just installed LW, so no- not experienced at all!
I have LW 4.10.9, and Java 1.4.1_01

Thanks very much for your help...!