[Koha] name-based virtualhost problem

[clint.deckard]

I would appreciate some help diagnosing a problem.
I have three package installed Koha instances running on a Debian 
server, for a number of weeks all has been OK but today the opac address 
for one instance leads to the opac of another. The admin interface 
operates without issue though.
I have reloaded the config and restarted apache but the problem remains.

Any assistance would be appreciated.

Clint.

-- 
Clint Deckard
Ashley Clinton
RD1
Takapau
Central Hawkes Bay, New Zealand.