This tip was posted on the General board by CW and I thought it might do some good here. Thanks, CW!
On a few pages I have come across it wouldn't let me do a "Ctrl" and then "F" key but it would let me use my browser (usually located at the top of your computer screen) select "Edit" then select "find on this page". One or the other usually works on a page.
Good hunting,
CW