CGSResolveShmemReference error in 2.7.2

I'm getting a red warning message ": CGSResolveShmemReference :
reference offset (32768) exceeds bounds (32768) on shmem obj 0xca4",
on my R console, 30 of them this morning. Most informative Google
result was at: http://lists.apple.com/archives/Quartz-dev/2004/Dec/msg00043.html
: "Generally, this particular error simply indicates that there is a
memory smasher in the app."

A bug in this version of the Mac GUI?

Please send me the full log. The GUI simply displays all error  
messages even if they were not produced by R but some of the plugins  
or other loaded code. Hence it is not necessarily a bug in the GUI.  
Please also have a look at FAQ 12.4 just to make sure you don't have  
any rogue plugins.

If you really think this is a bug, please don't forget to post  
sessionInfo() as well as the machine type you're using.

Thanks,
Simon