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Apple user since 1978 or so. Apple ][ was the bomb back then... 16k RAM... no floppies, yeah, things have changed a bit...

The name was already in use by another company, so Apple quietly changed the name

As for me, changing the name in System Preferences fixed the issue for me
 
I have not had this problem in quite a while but I did have it. Now running 10.10.4 can I turn Wake for network access back on without a problem?
 
the latest update appears to have started the problem again on a computer that never had it before. Upon waking from sleep, I get a message saying a computer with the same name is on the network. Now up to a 6.

Note: the computer name in finder does not have any appended numbers.
 
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