submitting a region hangs emacs

[Sundar Dorai-Raj]

Hi,
   I'm using emacs-21.2.1 with ESS 5.1.24 on Windows 2000 and S-PLUS 6.1.

When I submit a region in which single commands are broken up across 
several lines emacs (or S-PLUS?) hangs.

For example:
I'll highlight the following code:

dframe <- data.frame(x=1:10,y=rnorm(10))
dframe <- data.frame(x=1:10,
                      y=rnorm(10))

and hit C-c C-r to submit the region.

 > dframe <- data.frame(x=1:10,y=rnorm(10))
 > dframe <- data.frame(x=1:10,
+
+ Interrupt

 >

This also hangs if I copy and paste the latter command directly to the 
console. No problem if I use source("file.ssc").

Thanks,
Sundar