Insert function changed
 

Previously when I right clicked on a worksheet, to add another worksheet, a
small shortcut would come up with only a couple of choices. (add worksheet,
add chart etc)
Now when I right click the worksheet to add another, Excel is searching ALL
drives and folders looking for other Excel documents. This takes quite a long
time.
What changed? and how can I fix this setting.
I have already tried uninstalling & re-installing Excel but to no avail.