I just upgraded to 4.12.3 and im having the same problem with it not being able to minmize.. it just shuts the program down.. its not hiding either.. it completely shuts down, along with it not launching my windows media player!! Lets fix the bugs guys

I've just thought about it. Go and right click on your system tray (not pointing at anything special) then go to properties and then "Customize". Check whether LW is hiding when inactive (you need to have LW open to do so).
That could be the reason why you don't see it, though it might still be active working.

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"Never Argue With An Idiot. They Will Drag You Down To Their Level, Then Beat You With Experience"

that never helped me....

Limewire shows that its running under task manager but when I go to the 'customize' it doesn't show that its a running program so I can't click on anything to make it show. Also when you click on the X to actually minimize it, because thats how I have it setup under my limewire preferences, it closes down completely.

All of this started when I d/l the latest version