more than likley, u have run out of memory because you ahve to many copies of the file open.
my experience in me is minimal but i still think the old 3 finger salute works so get that error to come up and hit ctrl+alt+del
if you see several of the exact same entries in the list that is why youre out of memory

btw when computers say memory they dont mean hard drive space they mean ram

if im not mistaken i dont think limewire supports ME yet so u may be out of luck till teh next version but we are all hoping that is soon