heya,
...just a note that a new alpha of tcl/tk for OSX is available at:
http://homepage.mac.com/tigital
...pd needs to be recompiled to use this: just change the references to "8.4" in the makefile to "8.5", then place the tcl.framework and tk.framework in your "/Library/Frameworks", and finally place the new Wish Shell.app into "/Applications/Utilities"...
...this release fixes the toggle button problem, which actually affected alot of interface stuff, as well as correcting a redraw bug...to my mind, this effectively replaces the 8.4.x releases, and is much faster at canvas/text drawing...
...as always, bug reports welcome!
l8r, jamie