[R-SIG-Mac] R 3.1.2 & Yosemite GUI slowness

[David Dobolyi]

Dear Yan,

Are you still seeing this issue? It has been bothering me for months now, 
and I even found an instance where using progress_bar with underlying 
output to the GUI will cause so much slowdown as to crash R given 
sufficient time (i.e., as hidden printed output piles 
up in the background, the whole process slows to a crawl).

Best,

David