[VIM] prison bugs! (IE? Windows? RadiantOne?)

[security curmudgeon]

http://gcn.com/articles/2011/05/30/colorado-prison-sidebar.aspx

[..]

For instance, the inmates discovered that if they opened more than 200 
windows in Internet Explorer at a time, it would cause a buffer overflow, 
Jubic said. .Once they caused the buffer overflow, group policy stopped 
completely,. and access was restored to additional function keys on the 
keyboards.

[..]



Any guesses as to where the vulnerability lies?