Help - Local Hostname error

[igalaxy]

Hi all, I've got a problem which only started recently.

My Mac keeps thinking that there is a mac on the network which has the same name of it (just to clarify - there are no other computers named similarly)

I think it's picking up an old version of itself, and what it's saying changes.

Heres a screenshot of it:

Please help, thanks.

 

[miles01110]

Turn off Sharing in System Preferences.

 

[igalaxy]

Turn off Sharing in System Preferences.

The problem is I need system sharing... It's now happening with my computer name as well - I changes from XXX'siMac to XXX'siMac (2) etc...

Could the mac address be the problem? (asin network ID, not the apple kind?)