Selecting in layer panel hangs CS4

This happens fairly consistently to me when in symbol-editing mode
(specifically a button) in CS4. I go to select an object in one of the
layers that comprises the button. The cursor changes to a black pointer
arrow with a small "page" icon attached to it, and CS4 stops responding
to anything I do. I can move the cursor and click all over the place,
but nothing happens. I can't select anything from the menu or use a
keystroke to get out of it. CS4 is also consuming the CPU at this point,
which would seen to indicate it's stuck in a loop internally. My only
option is to close FW, which gives me the Windows "this application is
not responding" warning before killing it.

Strangely, if I restart FW and open the document again for regular
editing, selecting an object from the layer panel will cause the same
problem to occur again. The only way to clear it that I've found is to
first click on a layer in the panel to select the entire layer. This
works, and after than I can deselect everything and then select
individual objects as usual. But the problem is always initiated by
trying to select an object from the panel while editing a symbol.

Should I report this directly to Adobe support?