Not for all of us I just updated to Mountain my imac 27" and got these issue even on 10.8.2 wich auto updated after the new OSX install. Please Apple take these into consideration again.
FIxed my problem!
After years the problem was solved somply!
Go to System preferences
Go to Ethernet Go to AdvanceGo to Hardware
The just make the changes like in the pictures below
What was set differently before?
It was different
Basic was blank
After I put this configuration it worked righ way.
I have the above same settings and I stll get Status: Cable unplugged.....
its like a ghost...keeps coming back...
I have the same issue! Bought new cables, modem, did SMC reset as well as PRAM and nothing!
Retrieving data ...