In grid view, CTRL+A no longer selects all the images. The film strip does show all photos selected. But if you wanted for example rename all of your images. In LR3 you could go to "g"rid view, CTRL+A, F2 rename all photos.
Just want to make sure we're talking about the same thing. CTRL+A in grid, used to select the images in the grid itself. Now only the filmstrip images get selected. So obviously LR is receiving the signal.
Windows 7 64-bit -- same
Did not try a new catalog
Restarting LR & computer have not worked.