Limewire won't shut down completely...Ever.
 

Recently upgraded my Limewire Pro to the new 4.14.10 version and am having promblems disconnecting. When I click to shutdown, the Limewire window closes, and the small "shutting down limewire" dialogue with the sliding bar is displayed continually, never disappearing or completing the shutdown process. Even when I try Ctrl-Alt-Delete, Limewire is not listed as a running "Application", so I have to go into "Processes" , find Limwire.exe and end the process. I've never had a problem shutting it down before, so I am not sure where the bug is. If anyone has any input, itd be much appreciated!
Thanks!

Do you have LW set to shutdown immediately (tools > options > system tray)? if not, try setting to shutdown immediately > apply > ok.

Which version of Java are you using? Try updating. Download the JRE offline installer & remove any other Java versions before installing this one.
Java SE Downloads

If that version of Java gives you problems (some people have had dramas with the latest Javas, I'm using the latest update & it's fine here), use this older version instead. Again, download the offline installer & remove any other versions before installing this one.
Archive: Download Java 2 Platform Standard Edition (J2SE) 5.0 Update 11

If that doesn't help, delete LW's preferences folder when LW's properly closed. See point 3 here & also point 2 if you've used older versions of LW in the past (there could be a folder in either location).
Fixes for LimeWire
This will change all of your settings within options, you'll have to go back through afterwards & reset things. If you're not sure of your settings, go through LW's tools > options & write them all down, so that you can reset things later.
In case you're using Vista: LimeWire Pref Folder in Vista