No don't get Pro unless you're happy with the basic version!
Sort out any small issues 1st & then once you have some experience of use then consider getting pro. The improvements are not dramatic but subtle. Connecting to 5 peers instead of 3.
* Please answer the above questions so we have some type of info to help us work out where your problem may lay. Also please do the following tests:
* Do this simple test for us. Using your browser go here:
http://www3.limewire.com:6346/ The page should say 'Your test worked!'. What happens when you go there?
* Do this test:
Bug Report instructions & sample image Is the result True/False?
* "IF" you have OSX's firewall active then please see this about configuring it to allow LW full access:
Firewall configuration instructions (click on link)