You could free up C-tab by customizing org-disputed-keys and org-replace-disputed-keys. Or, maybe even better in your case, you could overwrite Org's setting of C-tab in a hook, for example
(add-hook 'org-mode-hook
(define-key 'org-mode-map [(control tab)] nil))
Cool. Thanks!
and I use C-c for CUA "copy".
I have no idea how to recover C-c and C-x. How can you use Emacs if these keys are used for something else? I guess CUA does this by only using them when the region is active, but this is also not a solution because many commands working on the region are invoked with C-c or C-x.
Incidentally, in my Emacs 23.0.93.1, if I turn on
CUA mode, C-c does not do copy, even though cua-enable-cua-keys is set.
Hmmm... I'm using a very recent snapshot:
GNU Emacs 23.0.91.1 (i486-pc-linux-gnu, GTK+ Version 2.14.4) of 2009-03-20 on hassium, modified by Debian
... and C-c/copy and C-x/cut work fine. The only CUA settings I have in my .emacs is:
(cua-enable-cursor-indications t)
(cua-enable-modeline-indications t)
(cua-mode t nil (cua-base))
So it should absolutely work for you too.
HTH, and thanks again.
-Tennis