As soon as I click on a PDF file in the results view it not only previews it
but it also shifts the focus to the preview window. I can mouse back to the
results window but I just want to navigate with the keyboard (e.g. arrow key
through results looking at the first page of each result). The only keyboard
navigation I can find is CTRL-TAB which only moves the focus forward and I
have to go through about 8 buttons to get back to the results window. Am I
missing something subtle or is this really as bad as it seems. A few more
keyboard shortcuts (even CTRL-SHIFT-TAB to go backwards) would help.

The windows desktop search does a lovely job on MS Office documents and
doesn't steal the focus. So far I only have the problem with Adobe Reader. I
suspect Microsoft will blame this problem on Adobe, but is there anything I
can do?