When I open an excel 2010 file, it takes ages before I can click on the menu tabs. the file seems to open and I can navigate cells and enter values with the arrow keys but it takes something like 30 secs to a minute - sometime more - before I can click on Home, Insert, Layout tabs....

I am working on a home PC that is on my local network but no other computers and connected right now.

I did a 'repair', problem still persists. Funny thing is if I click away on to say my browser then straight back the tabs start working.


Help most welcome.........!