[ESS] slow response on Mac OS 10.9

[Stephanie M. Gogarten]

Hi,

I just upgraded to Mac OS 10.9 (Mavericks) and I'm having trouble with 
ESS.  I have R 3.0.3, and I tried both the ESS-included Emacs binary 
(http://vgoulet.act.ulaval.ca/en/emacs/) and the binary without extras 
(http://emacsformacosx.com/) and installing ESS from source.

In both cases, I'm getting really slow response when using the "Execute 
this line" button in Emacs.  The simplest R functions take several 
seconds to process.  Typing directly in the R buffer doesn't have this 
problem.

Has anyone else seen this behavior, or know of a fix?

thanks,
Stephanie

(also posted to r-sig-mac, sorry for any duplicate emails)