Hi !
Thanks for your help and detailed answer.
I was surprised by what I thought to be a mac adresses access controll airport bug,
because with previous firmware release I could have differents settings for each
device and I was using this possibility to dedicate each airport express to
connect with specific devices.
Ill manage other way for instance for the one dedicated to music streaming
to my Hi Fi by not allowing this one to have clients.
I agree with you,
being now aware that the Time Machine / Time Capsule issue
we were so many to experience after Mac Os Lion 10.7.2,
was due to the presence of a Western Digital software used by
an external W.D. Mybook disk using a Plist launch daemon file
blocking the acces of T.Machine to T.Capsule after every
reboot of the computer.
But it is a bit surprising anyway,
when you know W.D. External disks are recommended by Apple
in its Apple Store,
and that if I understood things correctly,
my own Imac native built-in disk has been manufactured by W.Digital ...
And Apple care people took about 4 months to find out ...
I spent myself several hours on the phone with an Apple Care
2nd Level ingeneer with no result ... except I learnt a bit more
about using my Mac. (Restauring system etc...)
But as said in the last words of a famous moovie dialogue ...
"Nobody is perfect" !
And I remain an Apple-Addict anyway !
So if I understood you corectly,
I have to :
1°) update from Airport Utility v5.5.3 to v6
2°) download the separate AirPort Utility 5.6.
3°) update T.Capsure & A.Express(s) firmware to 7.6.1.
(I thought this was only necessary to .b or .g devices - I have only .n)
4°) upgrade from lion 10.7.2 to 10.7.3
Thanks again for your help,
Jean.