[R] R hanging after loading tcltk

[Salkind, Lou]

On R 1.3 / RH 7.1 / i386 (compiled with shared library support), I typed
* library(tcltk)
* help("some nonsensical string")

and R never returned a prompt (but not consuming any CPU cycles).  If  tcltk
is not loaded, I get the expected help error message, a prompt, and can
continue my session as expected.  
Any ideas?  I am running tcl 8.3.3.2.
I would assume this has something to do with event handlers...

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