Thanks to Stan & Enchanter for your help.

I re-installed some test clients with the 7.5.3 client as you suggested & bingo 
- happy days  :D

My next post was going to be why would a later version of the software not 
support w2k8 R2 - however the answer has been provided by Stan.

I'd had a dig around prior to submitting this post & saw references to 7.5.3 
client being used but didn't see it as relevant as I was using a later version 
& assumed that the later revision would have accumulated patches/hotfixes 
incorporated . . . 

Assumption is the mother of all ****-ups !

Many thanks as always for the assistance.

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