A page with the following markup:

{code}
This is some text that could cause a horizantal scroll bar with a narrow enough window
{code}

Will be replaced by just a horizontal scrollbar in the Internet Explorer 7 if the browser is being minimized. If the browser is maximized, the content re-appears and the scrollbar disappear.

If there is a page with the following markup:

{code}
Line 1 - This is some text that could cause a horizantal scroll bar with a narrow enough window
Line 2 - This is some text that could cause a horizantal scroll bar with a narrow enough window too.
{code}

Performing the same steps as above would leads to the scrollbar takes up "Line 2" but not "Line 1".
It is not reproducible in IE6 and Fire Fox browser.