limewire keeps closing down!

[goodws1]

i have always once i started downloading just went to the righthand side of the taskbar where the little limewire icon show and clicked on exit after transfers. this would stay this way until i clicked exit limewire. now after i go to bed i do the same but in the morning when i move my mouse to make screesaver go away the limewire ico goes away too in the taskbar at the bottom and closes out limewire. also this even happens if i minimize limewire or even if i go on line when i go off line it also closes limewire. help!!! this is always haw i have done it. i dont understand why it doesnt work now. its very aggrevating whaen a movie is downloading and then i have to wait sometimes forever for it to start downloading again. i dont know what to do please help me!!!