Mac Mini not visible in Mac network (shared drives, remote desktop)

[xterminated]

Hi,
I've got the following problem since a few months and can't figure what the problem could be.
My Mac Mini in not visible on my other macs in Finder oder Path Finder.
With unsing Apple + K shortcut I can connect to alle Mac Mini drives.

- Both machines have 10.8.4. installed
- Router is a Time Capsule
-> MBP connected via WiFi
-> Mac Mini via LAN cable
- IP Adress will be set via DHCP (static IPs won't help, tried that of course)
- Remote Desktop und Sharing is activated on both machines within preferences
- MacMini sees my MBP und my GFs MB
- MBP is able to see my GFs MB, but not my MacMini
- No Firewall acticated on both machines
- rights have been checked and repaired with the harddrive tool

Anybody an idea what I can try next?
Thanks!

 

[xterminated]

Error resolved. It's was obviously my fault...

I changed the plist to deactivate multicasts a long long time ago
http://blog.tsunanet.net/2010/02/how-to-disable-bonjour-on-osx-106-snow.html

After deleting the entire line my mac mini is visible again.