Good thing plesk added that additional comment. Because their error message is so much more informative than the default IE provides to help the user in case of uninformative error messages.<p>Yes. That's really well done.
Microsoft products are full of annoying features like this. Another example is Outlook and the way it removes arbitrary newlines from plain text emails.<p>Also:
<a href="http://www.fourmilab.ch/webtools/demoroniser/" rel="nofollow">http://www.fourmilab.ch/webtools/demoroniser/</a><p>Choice quote: Rule of thumb--every time Microsoft use the word "smart," be on the lookout for something dumb