The Mishna Berura in question can be seen here:
http://www.dailyhalacha.com/MBerura/Images/383.jpg
The entire sefer can be viewed or downloaded from:
http://www.hebrewbooks.org/14170
(Yasher koach to “hebrewbooks” for making the entire Mishna Berura [as well as many other seforim] available online).
Nothing that was said here merited rudeness, rancor, or disrespect. There are no opinions or corrections expressed here in a strident manner that could not have been made equally well politely. Machlokes over halocha or learning leshaim shomayim can be invigorating and geshmak. Unpleasantness between frum people is disturbing.