User accesses any Excel document that he needs to work on, and at any point
in time, the application will stop responding correctly - e.g. the mouse will
start highlighting cells but the user cannot de-select them, and it will stay
focused on Excel so that user cannot access other apps etc.. Also, when he
reboots, this doesn't resolve the problem - Excel apparently restores the
file at launch and user has the same problems as before the reboot.
We have been unable to find a fix for this issue, any help would be
massively appreciated

-- Thabks

Joe Mitchell MCP