Ok, i have been reading these threads for HOURS. I did all the restart in safe mode, did the repair permissions, got the new java download, but still when i try and install LW, i get through the process, but it bounces then goes away. nothing. I've had my mac since April and want to put limewire on it. Thanks for ANY help.

You can try this version or one of them LimeWire cvs builds (4.13.4jum489)
No installation necessary, just drag & drop the program to desired location after dmg opens.
*Note: Jum has not updated this CVS version is over a month, so it's not as update as it normally is. He must be on holiday.

You may want to try deleting your LW preferences folder whilst LW is CLOSED; it is found here:
/Users/your_username/Library/Preferences/LimeWire