RandallR:
That is, except for pins 7 and 8. They are 0.15 inches apart.
This isn't an unknown "feature" of the boards...
http://forums.adafruit.com/viewtopic.php?f=25&t=13666
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1174672272
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1190586589
For a long time, the FAQ had this as a question. The response at the time was "we made a mistake on the first Arduino." Eventually the story turned into, "You can't put a shield on backwards" which sounds better?