Second user takes way too long to sign out or shut down

Hi All

I have been using 8.1 pro for about 6 months and have a 2nd "family" user account (local standard account).

My primary user account functions well and logs/signs out and shuts down within a few seconds as would be expected.
However the family account takes towards 10 minutes to do either for no apparent reason. (Although it signs in fine).

I have deleted the account and recreated it with the same results.

I have no idea where to go from here as it is pretty unusable if we need to switch accounts.

Any help/pointers would be much appreciated.

Thanks

Nick