excel delays to open a document, delays also to open a cloud file

1. Go to
- File ->
- Options ->
- Advance ->
- General (area) ->
- Uncheck the "Ignore other applications..."

2. clear the Recent of office
- close all of your office applications
- open the computer window
- at the address type %appdata% and press enter
- from this point go to Microsoft -> Office -> Recent
- delete (or backup somewhere) all the files in this directory

C:\Users\<user name>\AppData\Roaming\Microsoft\Office\Recent

Applies to excel 2010 and 2007 (with out the cloud).