I just downloaded the beta version as you suggested, but am still unable to get the program to launch when I double click. The icon still merely bobs and then settles back into the dock.

I downloaded a program called checkNAT and it says that the ports which supposedly my data would be running through are not open. However I have selected in the system preferences for my firewall to allow it to remain open. Beyond that I do not know what to do to fix the problem, though I doubt this would prevent limewire itself from opening. Any suggestions on this front either? I had not had any problems with any of this until I downloaded the most recent version of OSX (10.3.2). Is it possible that apple has somehow blocked my downloading ability?