Re:How Good C# Habits can Encourage Bad JavaScript Habits
by DrJokepu on Friday October 08, 2010 @05:10AM
(#1771073)
It wasn't completely fixed in IE7, unfortunately:
" However, as some web developers have pointed out, those changes don’t solve the problem entirely. IE still leaves behind anything not attached to the tree when we tear down the markup. In addition, sites that users keep open for extended periods of time, such as Web-based mail, can still cause IE’s memory usage to continually grow if the site doesn’t take care to avoid the leak patterns."
" However, as some web developers have pointed out, those changes don’t solve the problem entirely. IE still leaves behind anything not attached to the tree when we tear down the markup. In addition, sites that users keep open for extended periods of time, such as Web-based mail, can still cause IE’s memory usage to continually grow if the site doesn’t take care to avoid the leak patterns."
http://blogs.msdn.com/b/ie/archive/2007/11/29/tools-for-dete...
It's still a major pain in the back.