Inline src blocks cannot update their results --- causing some of us 
heaadaches [1].

These patches fix that by placing the result of an inline src block in an 
export snippet with a faux :back-end called 'babel'.

So C-c C-c with point on src_R{1+2} will insert `@@babel:3@@'. Updating 
the contents of the inline src block and retyping C-c C-c will update the 
snippet. On export, these snippets are rendered using the verbatim 
transcoder, e.g. \texttt{3} for latex backends.

Support for most backends is provided.

org-babel-execute-buffer will also update such snippets.

Please try these patches out.

Remember to recompile the files that these patches modify or you will get 
wrong results when you restart emacs.

HTH,

Chuck

Footnote: [1] http://thread.gmane.org/gmane.emacs.orgmode/92481

p.s. If these patchesa are (eventually) acceptable, FSF has a copyright 
assignment for me on file.