Hi,
Yes, exactly, and glad you mentioned the PC, as that is my situation too. My Macbook Pro runs OS 10.8.5 and is connected to a windows workgroup of my own administration (home office). None of my other macbooks ever experience this, and it sometines points to my one PC, a Dell Optiplex running Win7 "[There was a problem connecting to the server bruce-PC"]. Other times it refers to the server by ip address.
In both cases, a simple "ping" command shows that the "problem" server is responding normally, 64 bytes coming back in about 1.2 - 1.8 ms.
This behavior started back in Leopard days, sporadically, then stopped for a while eventually after upgrading to Mountain Lion, to started again last year, stopped again, now started again intermittently and is now NOT stopping. Makes the computer unusable, which ***** cuz it just went out of 3-year Applecare but still works great otherwise and I need it to composite edit and edit my short films and to teach classes at New YorkUniversity.
I WAS using Network Magic for my Network admin -- great software, actually, but I just uninstalled it to eliminate that as a factor. No diff. CANNOT make it stop.
HELP!