I've got a dead simple bit of code where I switch screenupdating on, run a
small section of code (basically runs a routine that puts up a percentage of
progress so the user doesn't stare at a mental screen but still gets some
feedback) and then I try to switch the updating off again so that the code
can carry on.

Problem is that the updating isn't switching off, if I go through the code
line by line it gets to the '=false' line and it executes without any errors
but in the watchwindow screenupdating is still showing as being '=True'.

Never come across this before, any suggestions?