Thank you all for your kind wishes as they worked the trick.
All worked fairly smoothly.
I wish I had more spare time last weekend to configure WHS 2011.
Managed to extend OS partition to the full capacity of the SSD (of course after moving shared folders to other HDDs).
Started adding user a/cs and loading software to the clients.
Once it worked fine, other time not.
Connector (?) messed up something in .NET Framework 4 / Microsoft Update as since that moment Update kept reporting missing updates that so far I have installed several times. Then I rann MS's repair patches plus forced Framework installation to repair itself but the problem has not gone.
I have unregistered that client, will remove Connector, uninstall Framework and start over again.
On other client nothing like that happened. Hmmm ...
VIERA TV connects to the server over WiFi but the speed is just so slow (even when downloading photos, I guess 54Mbps is just not enough (how long should i tatke to transfer 3.5MB picture ?, OK there is some overhead here and there but ... it is roughly 28-30Mb to transfer, a couple of seconds ? there was not much other WiFi traffic, I guess, when I tested that but loading a pic was taking several seconds, more line 10s or more).
Need to revisit the router config to see if I can locate any bottleneck there.
RE: IPs I reserved them in DHCP so they are effective static for machines that are hardwired i.e. the server itself and one of the clients. I may do the same for the remaining clients.
I have not got MAC filtering setup in the router but I am considering it. It could be a pain if any our visitors want to connect - WAP2 is already painful but then adding their MAC's to the routers table can be slightly over the top precaution, I suppose.
EDIT:
Sorted ...Connector (?) messed up something in .NET Framework 4 / Microsoft Update as since that moment Update kept reporting missing updates that so far I have installed several times. Then I rann MS's repair patches plus forced Framework installation to repair itself but the problem has not gone.
I have unregistered that client, will remove Connector, uninstall Framework and start over again.
On other client nothing like that happened. Hmmm ...
Removed client from WHS list
Uninstalled Connector software
Uninstalled .NET Framework 4 components
Rebooted
Checked MS Update to see if offending updates were gone
Installed .NET Framework 4 from Standalone
Ran MS Update
Rebooted
Ran MS Update to test - all OK
Now installed WHS Connector
Rebooted
Ran MS Update - all fine