I've made the point before, but as a professional Code Monkey/designer a "quality" site should never go live without...

a) Rigorous testing
b) Being put to the test by a focus group using every sort of connection and every sort of browser (and every level of web user too).

It's time consuming but it avoids situations like this, and it pays for itself in user satisfaction which equals site stickyness.

The liver is evil - It must be punished.